Looks to me like a good potential buyer that by his own words does not fully grasp the English Language and is very interested in buying your rail and is trying to work out some kind of way of getting it and is telling you he can pay by PayPal, Bank Transfer, or Personal check.
Looks like a good buyer to me, just trying to work things out to get what you are selling and how to pay you.
Set up a duplicate bank account just for the purpose of receiving or sending bank to bank transfers. That is a good solid way to receive money and it takes only a few hours to get. This buyer is asking yourt account info so he can send money. He will need your account number and the bank routing number to transfer his money to your bank account.
Or he has said he can pay you by PayPal.
Ed