Onramper generally does not add any fee on top of onramp fees.
Users pay a fee that is determined by the onramp. When a user performs a transaction, Onramper compares the quotes given by all onramps, and recommends the onramp with the lowest fees. This results in users receiving, on average, more than 1.5% additional cryptocurrency through Onramper compared to the average pricing of other onramps.
Onramper typically does not impose additional fees on top of the pricing provided by onramps. Instead, we receive a share of their revenue for the transactions sent to them.