I know El Salvador is very crypto friendly , are there any exchanges on there? I was wondering also how much does it cost to get a coin on an exchange these days? I rememeber years ago it use to cost a bitcoin, but a bitcoin was WAY less then it cost now.
Are you in El Salvador or you are just asking and if your not in El Salvador then there is no need for you to ask how to set up a cryptocurrency shop in the country. Op your question is irrelevant, why must you asked if there is any exchange in El Salvador. Countries that have not even adopted cryptocurrency too have exchange to make transaction and El Salvador has adopted bitcoin as a legal tender yet you are asking if it has exchange. Op if you want to buy bitcoin, you can use international exchanges like Remitano, Binance, OKX and bYbit etc.
Therefore you don't have to look for exchange in El Salvador. Exchanges do not cost in transaction if you using Internal Transaction and selling within the exchange but when you use on-chain then transaction fee will increase but even at that it is normal mining fee.