Most platforms have methods built in to deal with this. For example, on HodlHodl you can set a stop loss which will disable your trade if the price fluctuates outside a price range you have set. Or on AgoraDesk you can use floating price so your trade takes places at the price when the offer is completed, not at when it was posted. Or you can just take your offers down when you go to bed.
cool. i'll look into those.Quote
If you are the only person offering a service which is in demand, then you can charge a premium for doing so. This is not unique to bitcoin.
i can see why someone would prefer using F2F these days since alot of payment methods like paypal are just not suitable for selling your bitcoin for. since they are subject to chargebacks/reversal long after you sent the person your bitcoin...i'm not sure there really is a suitable payment method other than cash or crypto. like litecoin. but all of these p2p dexs they got tons of people wanting to buy using these crappy unsafe payment methods. unsafe to the seller! 