diff --git a/chain/vm/gas.go b/chain/vm/gas.go
index 67dd7677e94..c860ce9a0c2 100644
--- a/chain/vm/gas.go
+++ b/chain/vm/gas.go
@@ -160,8 +160,35 @@ var prices = map[abi.ChainEpoch]Pricelist{
 
 		hashingBase:                  31355,
 		computeUnsealedSectorCidBase: 98647,
-		verifySealBase:               2000,        // TODO gas , it VerifySeal syscall is not used
-		verifyAggregateSealBase:      400_000_000, // TODO (~40ms, I think)
+		verifySealBase:               2000, // TODO gas, it VerifySeal syscall is not used
+
+		verifyAggregateSealPer: map[abi.RegisteredSealProof]int64{
+			abi.RegisteredSealProof_StackedDrg32GiBV1_1: 449900,
+			abi.RegisteredSealProof_StackedDrg64GiBV1_1: 359272,
+		},
+		verifyAggregateSealSteps: map[abi.RegisteredSealProof]stepCost{
+			abi.RegisteredSealProof_StackedDrg32GiBV1_1: {
+				{4, 103994170},
+				{7, 112356810},
+				{13, 122912610},
+				{26, 137559930},
+				{52, 162039100},
+				{103, 210960780},
+				{205, 318351180},
+				{410, 528274980},
+			},
+			abi.RegisteredSealProof_StackedDrg64GiBV1_1: {
+				{4, 102581240},
+				{7, 110803030},
+				{13, 120803700},
+				{26, 134642130},
+				{52, 157357890},
+				{103, 203017690},
+				{205, 304253590},
+				{410, 509880640},
+			},
+		},
+
 		verifyPostLookup: map[abi.RegisteredPoStProof]scalingCost{
 			abi.RegisteredPoStProof_StackedDrgWindow512MiBV1: {
 				flat:  117680921,
diff --git a/chain/vm/gas_v0.go b/chain/vm/gas_v0.go
index c90ebaa733c..13c5fdd86ad 100644
--- a/chain/vm/gas_v0.go
+++ b/chain/vm/gas_v0.go
@@ -18,6 +18,28 @@ type scalingCost struct {
 	scale int64
 }
 
+type stepCost []step
+
+type step struct {
+	start int64
+	cost  int64
+}
+
+func (sc stepCost) Lookup(x int64) int64 {
+	i := 0
+	for ; i < len(sc); i++ {
+		if sc[i].start > x {
+			break
+		}
+	}
+	i-- // look at previous item
+	if i < 0 {
+		return 0
+	}
+
+	return sc[i].cost
+}
+
 type pricelistV0 struct {
 	computeGasMulti int64
 	storageGasMulti int64
@@ -93,9 +115,12 @@ type pricelistV0 struct {
 	computeUnsealedSectorCidBase int64
 	verifySealBase               int64
 	verifyAggregateSealBase      int64
-	verifyPostLookup             map[abi.RegisteredPoStProof]scalingCost
-	verifyPostDiscount           bool
-	verifyConsensusFault         int64
+	verifyAggregateSealPer       map[abi.RegisteredSealProof]int64
+	verifyAggregateSealSteps     map[abi.RegisteredSealProof]stepCost
+
+	verifyPostLookup     map[abi.RegisteredPoStProof]scalingCost
+	verifyPostDiscount   bool
+	verifyConsensusFault int64
 }
 
 var _ Pricelist = (*pricelistV0)(nil)
@@ -189,8 +214,18 @@ func (pl *pricelistV0) OnVerifySeal(info proof2.SealVerifyInfo) GasCharge {
 
 // OnVerifyAggregateSeals
 func (pl *pricelistV0) OnVerifyAggregateSeals(aggregate proof5.AggregateSealVerifyProofAndInfos) GasCharge {
-	// TODO: this needs more cost tunning
-	return newGasCharge("OnVerifyAggregateSeals", pl.verifyAggregateSealBase, 0)
+	proofType := aggregate.SealProof
+	perProof, ok := pl.verifyAggregateSealPer[proofType]
+	if !ok {
+		perProof = pl.verifyAggregateSealPer[abi.RegisteredSealProof_StackedDrg32GiBV1_1]
+	}
+
+	step, ok := pl.verifyAggregateSealSteps[proofType]
+	if !ok {
+		step = pl.verifyAggregateSealSteps[abi.RegisteredSealProof_StackedDrg32GiBV1_1]
+	}
+	num := int64(len(aggregate.Infos))
+	return newGasCharge("OnVerifyAggregateSeals", perProof*num+step.Lookup(num), 0)
 }
 
 // OnVerifyPost
diff --git a/chain/vm/gas_v0_test.go b/chain/vm/gas_v0_test.go
new file mode 100644
index 00000000000..447e4f70c5c
--- /dev/null
+++ b/chain/vm/gas_v0_test.go
@@ -0,0 +1,32 @@
+package vm
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestStepGasCost(t *testing.T) {
+	s := stepCost{
+		{4, 103994170},
+		{7, 112356810},
+		{13, 122912610},
+		{26, 137559930},
+		{52, 162039100},
+		{103, 210960780},
+		{205, 318351180},
+		{410, 528274980},
+	}
+
+	assert.EqualValues(t, 0, s.Lookup(0))
+	assert.EqualValues(t, 0, s.Lookup(3))
+	assert.EqualValues(t, 103994170, s.Lookup(4))
+	assert.EqualValues(t, 103994170, s.Lookup(6))
+	assert.EqualValues(t, 112356810, s.Lookup(7))
+	assert.EqualValues(t, 210960780, s.Lookup(103))
+	assert.EqualValues(t, 210960780, s.Lookup(204))
+	assert.EqualValues(t, 318351180, s.Lookup(205))
+	assert.EqualValues(t, 318351180, s.Lookup(409))
+	assert.EqualValues(t, 528274980, s.Lookup(410))
+	assert.EqualValues(t, 528274980, s.Lookup(10000000000))
+}