What it costs
Nothing at launch, apart from gas and the price of the swap itself.
CostHow much
Protocol fee0% at launch. It can only ever be taken from interest, never from your deposit, and the contract caps it at 10% of the interest.
Gas, paid by youApproving USDC, starting the plan and, if you choose to, stopping it.
Gas for each buyPaid by the keeper, not by you.
The swapThe pool's own trading fee and the price it gives. A buy is refused if it would be more than 1% worse than the Chainlink price.
The lending vault's feeAlready taken out of the rate the site shows.
If the fee ever changes
The admin can change the fee without notice, but only within the cap in the code: at most 10% of the interest, and never any part of your deposit. A change is a public event on chain, and you can stop your plan at any time.