Selling ini's can lead to potentional scam and let me explain why, you're not trading ini file over ingames trading system, only way it would be tradeable is either sending file over skype or uploading it somewhere for the deal of either giving ec's 1st then get the ini (easiest way of scam) or giving ini before ec's so the guy who was suppost to give u ec's didn't actually give them to you. It's very unviable system + ini's aren't anything special, with some work and spare time ini's are pretty easy to copy (don't get me wrong some can be hard but there are simple ones aswell)