fix: on-chain update prices return excess send mode

contracts/contracts/ccip/fee_quoter/contract.tolk

@@ -533,7 +533,8 @@ fun sendExcessesTo(sendExcessesTo: address?, sender: address) {
         dest: receiver,
         body: createEmptyCell(),
     });
-    returnExcesses.send(SEND_MODE_CARRY_ALL_REMAINING_MESSAGE_VALUE);
+    reserveToncoinsOnBalance(0, RESERVE_MODE_INCREASE_BY_ORIGINAL_BALANCE);
+    returnExcesses.send(SEND_MODE_CARRY_ALL_BALANCE);
 }
 
 get fun tokenPrice(token: address): TimestampedPrice {

contracts/contracts/ccip/fee_quoter/messages.tolk

@@ -80,5 +80,5 @@ fun FeeQuoter_Costs.GetValidatedFee(): int {
 
 fun FeeQuoter_Costs.updatePrices(): int {
     // when we support token transfers the message value amount should depend on the quantity of supported tokens
-    return ton("0.01");
+    return ton("0.03");
 }

contracts/tests/ccip/feequoter/FeeQuoter.updatePrices.spec.ts

@@ -319,6 +319,35 @@ describe('FeeQuoter UpdatePrices', () => {
     })
   })
 
+  it('should not end up with lower balance than initial balance after returning excess', async () => {
+    const contract = await blockchain.getContract(setup.bind.feeQuoter.address)
+    const initialBalance = contract.balance
+
+    const priceUpdates: feeQuoter.PriceUpdates = {
+      tokenPricesUpdates: [{ token: FeeQuoterSetup.NATIVE_TON.token, price: 4000000000000000000n }],
+      gasPricesUpdates: [],
+    }
+
+    const updateResult = await setup.bind.feeQuoter.sendUpdatePrices(setup.acc.owner.getSender(), {
+      value: toNano('0.01'),
+      msg: { updates: priceUpdates, sendExcessesTo: setup.acc.deployer.address },
+    })
+
+    expect(updateResult.transactions).toHaveTransaction({
+      to: setup.bind.feeQuoter.address,
+      success: true,
+    })
+
+    expect(updateResult.transactions).toHaveTransaction({
+      from: setup.bind.feeQuoter.address,
+      to: setup.acc.deployer.address,
+      success: true,
+    })
+
+    const finalBalance = (await blockchain.getContract(setup.bind.feeQuoter.address)).balance
+    expect(finalBalance).toEqual(initialBalance)
+  })
+
   afterAll(async () => {
     if (process.env['COVERAGE'] === 'true') {
       const testSuitePrefix = 'feeQuoter_update_prices_suite'

pkg/ccip/ocr/config.go

@@ -16,8 +16,8 @@ type Config struct {
 }
 
 var DefaultConfigSet = Config{
-	CommitPriceUpdateOnlyCostTON: 0.03,
-	CommitPriceAndRootCostTON:    0.05,
+	CommitPriceUpdateOnlyCostTON: 0.05,
+	CommitPriceAndRootCostTON:    0.07,
 	ExecuteCostTON:               0.085,
 }