slippage
what the percentage actually costs you on a thin pool.
Slippage is the gap between the price you see and the price you get, and on thin memecoin pools it's everything. A 10% slippage on a $200 pool is a rounding error in absolute terms — but it's also the distance between entering and being immediately underwater. Start low on liquid pairs, accept more on fresh pairs, and never set more than you're willing to lose to a sandwich.