Is not only what you called shitcoins that has different prices on a different exchange but almost all the coins has a little different in terms of value even Bitcoin itself let alone what you called shitcoins. I don't know if you are familiar with arbitral trading? If your answer is yes then you shouldn't have as this question but if your answer is no then I will say it is a normal situation which can benefit you if you are a trader.
But in my example I can see enough buyers...but you are right, I didn't consider trade fees and withdrawal fees.
Also check if the wallet is online or offline .
If the wallet is offline you cant sell or transfer there.
well, I'm a novice trader and I'm afraid this be a scam, therefore I don't think doing that.