Every authorized seller has 2 balances on Nifty Gateway.
One is the balance you hold via Stripe Connect. Whenever you sell an NFT, and the buyer pays with a credit card, the proceeds of the sale with automatically go into your Stripe Connect balance. From there, those proceeds will be automatically cashed out to your connect bank account.
You can see your Stripe Connect balance on the Seller Settings page. This balance cannot be used for purchases, offers, or bids - it will simply cashout to your bank account automatically.
The other is your Nifty Gateway Balance. When a customer purchases from you and pays with Pre-Paid Ethereum or their Nifty Gateway Balance, the proceeds will go to your Nifty Gateway balance. This balance can be cashed out to your Gemini account, or it can be spent on the primary or secondary markets and used to place bids.
Further pay in and payout options - including more payment methods, access from more countries, and better balance management tools - are being worked on, so stay tuned.