To prevent last-minute price manipulation, if you swap purrADA for ADA on the last 2 days (March 3nd & 4th), there will be a fee of 25%. This means, if you had deposited 100 ADA and had gotten 100 purrADA in return, if you redeem the 100 purrADA during the last two days, you will only redeem 75 ADA effectively because of the 25% fee.