The Instant Access fee is based on the gross receivables purchased from your marketplace. Receivables include gross sales as well as, Amazon Account level Reserve balances when applicable.
Gross sales (receivables) equal the amount the buyer pays for an order. These are the total product charges from the Marketplace.
In the example below, you can see that we purchased $1,066.14 in gross sales from the marketplace. The 2.5% fee on $1,066.14 was $26.65. The fee is deducted directly from the available balance each day.