BUY SPX6900 · GASLESS DCA ON BASE
Email sign-in. No seed phrase. No gas. Swap USDC → SPX6900 (S&P 6900) in one tap. HOW IT WORKS →
FIELD MANUAL · HOW TO BUY SPX6900
What is the cheapest way to buy SPX6900?
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For small, regular buys, swapping USDC for SPX6900 directly on Base is hard to beat: Base network fees are a fraction of Ethereum mainnet’s, and on dcaspx the gas is covered for you. You pay a 0.5% dcaspx fee plus the Uniswap pool fee built into the quote. For one large purchase, a centralized exchange with low trading fees can cost less, but you need an exchange account and a withdrawal to hold the coins yourself.
Can I buy SPX6900 with a debit card?
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Yes. Sign in to dcaspx with your email and choose the card option when the app asks you to add USDC. Coinbase handles the card payment (its own fees apply) and delivers USDC on Base to your dcaspx wallet. Then tap buy to swap that USDC into SPX6900.
Do I need a crypto wallet, seed phrase or ETH for gas?
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No. dcaspx creates a wallet on Base for you when you sign in with email, so there is no browser extension or seed phrase to manage. Gas on your daily buys is covered, so you never need to hold ETH.
Who holds my SPX6900?
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You do. Your dcaspx wallet is self-custodial: you can export its private key from your account page at any time, or send your SPX6900 to any other Base address.
How much does each buy cost?
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Each tap buys $6.90 of SPX6900 with USDC, and the quote shows the expected SPX amount before the swap. Fees are a 0.5% dcaspx fee (about 3.5 cents on a $6.90 buy) plus the Uniswap pool fee, which is already reflected in the quoted price.