diff --git a/cmd/geth/admin.go b/cmd/geth/admin.go
index 49e2dc6f8b..2b99566386 100644
--- a/cmd/geth/admin.go
+++ b/cmd/geth/admin.go
@@ -70,6 +70,7 @@ func (js *jsre) adminBindings() {
 	miner.Set("stop", js.stopMining)
 	miner.Set("hashrate", js.hashrate)
 	miner.Set("setExtra", js.setExtra)
+	miner.Set("setGasPrice", js.setGasPrice)
 
 	admin.Set("debug", struct{}{})
 	t, _ = admin.Get("debug")
@@ -236,6 +237,17 @@ func (js *jsre) setExtra(call otto.FunctionCall) otto.Value {
 	return otto.UndefinedValue()
 }
 
+func (js *jsre) setGasPrice(call otto.FunctionCall) otto.Value {
+	gasPrice, err := call.Argument(0).ToString()
+	if err != nil {
+		fmt.Println(err)
+		return otto.UndefinedValue()
+	}
+
+	js.ethereum.Miner().SetGasPrice(common.String2Big(gasPrice))
+	return otto.UndefinedValue()
+}
+
 func (js *jsre) hashrate(otto.FunctionCall) otto.Value {
 	return js.re.ToVal(js.ethereum.Miner().HashRate())
 }
diff --git a/cmd/geth/main.go b/cmd/geth/main.go
index fd6925e6db..723353b0bd 100644
--- a/cmd/geth/main.go
+++ b/cmd/geth/main.go
@@ -51,7 +51,7 @@ import _ "net/http/pprof"
 
 const (
 	ClientIdentifier = "Geth"
-	Version          = "0.9.17"
+	Version          = "0.9.18"
 )
 
 var (
@@ -244,6 +244,7 @@ JavaScript API. See https://github.com/ethereum/go-ethereum/wiki/Javascipt-Conso
 		utils.MaxPeersFlag,
 		utils.MaxPendingPeersFlag,
 		utils.EtherbaseFlag,
+		utils.GasPriceFlag,
 		utils.MinerThreadsFlag,
 		utils.MiningEnabledFlag,
 		utils.NATFlag,
@@ -258,7 +259,7 @@ JavaScript API. See https://github.com/ethereum/go-ethereum/wiki/Javascipt-Conso
 		utils.ProtocolVersionFlag,
 		utils.NetworkIdFlag,
 		utils.RPCCORSDomainFlag,
-		utils.LogLevelFlag,
+		utils.VerbosityFlag,
 		utils.BacktraceAtFlag,
 		utils.LogToStdErrFlag,
 		utils.LogVModuleFlag,
diff --git a/cmd/mist/main.go b/cmd/mist/main.go
index 9d92cc1754..098afc7e24 100644
--- a/cmd/mist/main.go
+++ b/cmd/mist/main.go
@@ -73,7 +73,7 @@ func init() {
 		utils.DataDirFlag,
 		utils.ListenPortFlag,
 		utils.LogFileFlag,
-		utils.LogLevelFlag,
+		utils.VerbosityFlag,
 		utils.MaxPeersFlag,
 		utils.MaxPendingPeersFlag,
 		utils.MinerThreadsFlag,
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index b18d9851f8..dd3b6c8a2f 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -4,6 +4,7 @@ import (
 	"crypto/ecdsa"
 	"fmt"
 	"log"
+	"math/big"
 	"net/http"
 	"os"
 	"path"
@@ -116,6 +117,11 @@ var (
 		Usage: "Public address for block mining rewards. By default the address of your primary account is used",
 		Value: "primary",
 	}
+	GasPriceFlag = cli.StringFlag{
+		Name:  "gasprice",
+		Usage: "Sets the minimal gasprice when mining transactions",
+		Value: new(big.Int).Mul(big.NewInt(10), common.Szabo).String(),
+	}
 
 	UnlockedAccountFlag = cli.StringFlag{
 		Name:  "unlock",
@@ -133,8 +139,8 @@ var (
 		Name:  "logfile",
 		Usage: "Send log output to a file",
 	}
-	LogLevelFlag = cli.IntFlag{
-		Name:  "loglevel",
+	VerbosityFlag = cli.IntFlag{
+		Name:  "verbosity",
 		Usage: "Logging verbosity: 0-6 (0=silent, 1=error, 2=warn, 3=info, 4=core, 5=debug, 6=debug detail)",
 		Value: int(logger.InfoLevel),
 	}
@@ -270,7 +276,7 @@ func GetNodeKey(ctx *cli.Context) (key *ecdsa.PrivateKey) {
 
 func MakeEthConfig(clientID, version string, ctx *cli.Context) *eth.Config {
 	// Set verbosity on glog
-	glog.SetV(ctx.GlobalInt(LogLevelFlag.Name))
+	glog.SetV(ctx.GlobalInt(VerbosityFlag.Name))
 	// Set the log type
 	//glog.SetToStderr(ctx.GlobalBool(LogToStdErrFlag.Name))
 	glog.SetToStderr(true)
@@ -290,7 +296,7 @@ func MakeEthConfig(clientID, version string, ctx *cli.Context) *eth.Config {
 		SkipBcVersionCheck: false,
 		NetworkId:          ctx.GlobalInt(NetworkIdFlag.Name),
 		LogFile:            ctx.GlobalString(LogFileFlag.Name),
-		LogLevel:           ctx.GlobalInt(LogLevelFlag.Name),
+		Verbosity:          ctx.GlobalInt(VerbosityFlag.Name),
 		LogJSON:            ctx.GlobalString(LogJSONFlag.Name),
 		Etherbase:          ctx.GlobalString(EtherbaseFlag.Name),
 		MinerThreads:       ctx.GlobalInt(MinerThreadsFlag.Name),
@@ -305,6 +311,7 @@ func MakeEthConfig(clientID, version string, ctx *cli.Context) *eth.Config {
 		Shh:                ctx.GlobalBool(WhisperEnabledFlag.Name),
 		Dial:               true,
 		BootNodes:          ctx.GlobalString(BootnodesFlag.Name),
+		GasPrice:           common.String2Big(ctx.GlobalString(GasPriceFlag.Name)),
 	}
 
 }
diff --git a/eth/backend.go b/eth/backend.go
index 0f23cde2fd..8f07894670 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
+	"math/big"
 	"os"
 	"path"
 	"path/filepath"
@@ -53,12 +54,12 @@ type Config struct {
 	BlockChainVersion  int
 	SkipBcVersionCheck bool // e.g. blockchain export
 
-	DataDir  string
-	LogFile  string
-	LogLevel int
-	LogJSON  string
-	VmDebug  bool
-	NatSpec  bool
+	DataDir   string
+	LogFile   string
+	Verbosity int
+	LogJSON   string
+	VmDebug   bool
+	NatSpec   bool
 
 	MaxPeers        int
 	MaxPendingPeers int
@@ -76,6 +77,7 @@ type Config struct {
 	Dial bool
 
 	Etherbase      string
+	GasPrice       *big.Int
 	MinerThreads   int
 	AccountManager *accounts.Manager
 
@@ -200,7 +202,7 @@ type Ethereum struct {
 
 func New(config *Config) (*Ethereum, error) {
 	// Bootstrap database
-	logger.New(config.DataDir, config.LogFile, config.LogLevel)
+	logger.New(config.DataDir, config.LogFile, config.Verbosity)
 	if len(config.LogJSON) > 0 {
 		logger.NewJSONsystem(config.DataDir, config.LogJSON)
 	}
@@ -266,6 +268,8 @@ func New(config *Config) (*Ethereum, error) {
 	eth.blockProcessor = core.NewBlockProcessor(stateDb, extraDb, eth.pow, eth.txPool, eth.chainManager, eth.EventMux())
 	eth.chainManager.SetProcessor(eth.blockProcessor)
 	eth.miner = miner.New(eth, eth.pow, config.MinerThreads)
+	eth.miner.SetGasPrice(config.GasPrice)
+
 	eth.protocolManager = NewProtocolManager(config.ProtocolVersion, config.NetworkId, eth.eventMux, eth.txPool, eth.chainManager, eth.downloader)
 	if config.Shh {
 		eth.whisper = whisper.New()
diff --git a/miner/miner.go b/miner/miner.go
index bff0026dc4..d5ea9a1469 100644
--- a/miner/miner.go
+++ b/miner/miner.go
@@ -37,6 +37,15 @@ func (self *Miner) Mining() bool {
 	return self.mining
 }
 
+func (m *Miner) SetGasPrice(price *big.Int) {
+	// FIXME block tests set a nil gas price. Quick dirty fix
+	if price == nil {
+		return
+	}
+
+	m.worker.gasPrice = price
+}
+
 func (self *Miner) Start(coinbase common.Address) {
 	self.mining = true
 	self.worker.coinbase = coinbase
diff --git a/miner/worker.go b/miner/worker.go
index 87d17dfd69..22493c2354 100644
--- a/miner/worker.go
+++ b/miner/worker.go
@@ -72,6 +72,7 @@ type worker struct {
 	proc  *core.BlockProcessor
 
 	coinbase common.Address
+	gasPrice *big.Int
 	extra    []byte
 
 	currentMu sync.Mutex
@@ -93,6 +94,7 @@ func newWorker(coinbase common.Address, eth core.Backend) *worker {
 		eth:            eth,
 		mux:            eth.EventMux(),
 		recv:           make(chan *types.Block),
+		gasPrice:       new(big.Int),
 		chain:          eth.ChainManager(),
 		proc:           eth.BlockProcessor(),
 		possibleUncles: make(map[common.Hash]*types.Block),
@@ -123,6 +125,9 @@ func (self *worker) pendingBlock() *types.Block {
 }
 
 func (self *worker) start() {
+	self.mu.Lock()
+	defer self.mu.Unlock()
+
 	// spin up agents
 	for _, agent := range self.agents {
 		agent.Start()
@@ -132,6 +137,9 @@ func (self *worker) start() {
 }
 
 func (self *worker) stop() {
+	self.mu.Lock()
+	defer self.mu.Unlock()
+
 	if atomic.LoadInt32(&self.mining) == 1 {
 		// stop all agents
 		for _, agent := range self.agents {
@@ -144,6 +152,9 @@ func (self *worker) stop() {
 }
 
 func (self *worker) register(agent Agent) {
+	self.mu.Lock()
+	defer self.mu.Unlock()
+
 	self.agents = append(self.agents, agent)
 	agent.SetReturnCh(self.recv)
 }
@@ -239,6 +250,12 @@ func (self *worker) makeCurrent() {
 	self.current.coinbase.SetGasPool(core.CalcGasLimit(parent))
 }
 
+func (w *worker) setGasPrice(p *big.Int) {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+	w.gasPrice = p
+}
+
 func (self *worker) commitNewWork() {
 	self.mu.Lock()
 	defer self.mu.Unlock()
@@ -259,9 +276,23 @@ func (self *worker) commitNewWork() {
 		ignoredTransactors = set.New()
 	)
 
+	const pct = int64(90)
+	// calculate the minimal gas price the miner accepts when sorting out transactions.
+	minprice := gasprice(self.gasPrice, pct)
 	for _, tx := range transactions {
 		// We can skip err. It has already been validated in the tx pool
 		from, _ := tx.From()
+
+		// check if it falls within margin
+		if tx.GasPrice().Cmp(minprice) < 0 {
+			// ignore the transaction and transactor. We ignore the transactor
+			// because nonce will fail after ignoring this transaction so there's
+			// no point
+			ignoredTransactors.Add(from)
+			glog.V(logger.Info).Infof("transaction(%x) below gas price (<%d%% ask price). All sequential txs from this address(%x) will fail\n", tx.Hash().Bytes()[:4], pct, from[:4])
+			continue
+		}
+
 		// Move on to the next transaction when the transactor is in ignored transactions set
 		// This may occur when a transaction hits the gas limit. When a gas limit is hit and
 		// the transaction is processed (that could potentially be included in the block) it
@@ -383,3 +414,12 @@ func (self *worker) HashRate() int64 {
 
 	return tot
 }
+
+// gasprice calculates a reduced gas price based on the pct
+// XXX Use big.Rat?
+func gasprice(price *big.Int, pct int64) *big.Int {
+	p := new(big.Int).Set(price)
+	p.Div(p, big.NewInt(100))
+	p.Mul(p, big.NewInt(pct))
+	return p
+}
diff --git a/tests/block_test.go b/tests/block_test.go
index 79e3335b1a..e72f2b5483 100644
--- a/tests/block_test.go
+++ b/tests/block_test.go
@@ -103,7 +103,7 @@ func testEthConfig() *eth.Config {
 
 	return &eth.Config{
 		DataDir:        common.DefaultDataDir(),
-		LogLevel:       5,
+		Verbosity:      5,
 		Etherbase:      "primary",
 		AccountManager: accounts.NewManager(ks),
 		NewDB:          func(path string) (common.Database, error) { return ethdb.NewMemDatabase() },