Gas Costs

What Are Gas Fees?

Gas fees are network transaction costs paid to blockchain validators for processing your transactions.

Key Points:

  • Paid in ETH only (never TBASE)

  • Separate from platform fees

  • Vary based on network congestion

  • Go to validators, not AstaVerse

  • Transparent on Base Sepolia

Gas Fee Breakdown by Action

Action
Estimated Gas
Cost (ETH)
Who Pays

Connect Wallet

Free

0 ETH

No one

Create Auction

~50,000 gas

~0.0001 ETH

Seller

Place Bid

~45,000 gas

~0.00009 ETH

Bidder

Confirm Delivery

~40,000 gas

~0.00008 ETH

Buyer

Claim Refund

~35,000 gas

~0.00007 ETH

Buyer

End Auction

~50,000 gas

~0.0001 ETH

Seller

File Dispute

~30,000 gas

~0.00006 ETH

Either party

Admin Resolution

~60,000 gas

~0.00012 ETH

Platform

Average Total Gas Costs:

Why Gas Fees Exist

What Gas Pays For:

Validator Rewards - Compensate network validators Network Security - Prevent spam attacks Blockchain Processing - Execute smart contract code Data Storage - Store transaction on blockchain Decentralization - Maintain distributed network

Important:

  • AstaVerse does NOT receive gas fees

  • All gas goes to Base Sepolia validators

  • Fully visible on blockchain explorer

  • Same system as Ethereum mainnet

Gas on Base Sepolia vs Ethereum Mainnet

Network
Avg Gas per Tx
Why Different

Ethereum Mainnet

$5-50

High demand, congestion

Base Sepolia (Testnet)

$0.0001-0.001

Low usage, free testnet

Base Mainnet (Future)

$0.01-0.10

L2 scaling, efficient

Base Benefits:

  • 99% cheaper than Ethereum mainnet

  • Faster transactions (1-2 seconds)

  • Same security (inherits from Ethereum)

  • Predictable costs (stable gas prices)

Estimating Gas Before Transactions

MetaMask Shows:

What This Means:

  • Gas Limit: Maximum gas transaction can use

  • Max Fee: Highest amount you'll pay

  • Actual Cost: Usually less than max

  • Refund: Unused gas returned to wallet

Gas-Saving Tips

For Sellers:

Create auctions during low activity - Weekday mornings cheaper Batch similar items - One auction vs multiple Set longer durations - Fewer early-end transactions Let auctions auto-end - Saves manual end-auction gas

For Buyers:

Place one strategic bid - Avoid bid wars (multiple gas fees) Bid early - Less competition = lower gas prices Confirm promptly - Avoid last-minute rush Check gas before bidding - Wait if unusually high

For Everyone:

Keep ETH in wallet - Minimum 0.001 ETH for gas buffer Use testnet wisely - Free ETH from faucet, no real cost Monitor network status - Check Base Sepolia gas tracker Batch transactions - Do multiple actions in one session

Gas Price Monitoring

Check Current Gas Prices:

  1. MetaMask:

    • Shows estimate before every transaction

    • Displays in ETH and USD

  2. Base Sepolia Explorer:

    • Real-time gas price tracker

    • Historical data charts

  3. AstaVerse Dashboard:

    • Average gas costs displayed (future feature)

Payment Flow Examples

Example 1: Buyer Wins Image Auction (ETH)

Example 2: Buyer Wins Physical Auction (TBASE)

Example 3: Auction Ends with No Bids

Example 4: Buyer Wins Dispute (Refund)

📊 Fee Comparison Table

AstaVerse vs Traditional Platforms

Platform
Listing Fee
Success Fee
Buyer Premium
Withdrawal Fee
Total Fees

AstaVerse

$0.20-0.40

5%

None

None

~5-6%

eBay

Free

13.25%

None

PayPal 3%

~16%

OpenSea

Free

2.5%

None

Gas $5-50

~3-10%

Sotheby's

None

25%

25%

Wire 2%

~50%

Heritage

None

20%

20%

Check 1%

~40%

AstaVerse Advantages:

Lowest total fees - ~5-6% vs 16-50% No buyer premium - Buyers pay bid amount only No withdrawal fees - Keep 95% of sale Predictable costs - No hidden charges Blockchain transparency - Verify all fees

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