My bank told me that if I am transferring money inside the US using Fedwire or CHIPS once the receiving bank accepts the wire transfer it cannot be reversed unless the receiving party agrees.

The sender can cancel up until the receiving bank accepts it. also the bank can tell you if it is a wire transfer or something else which isn't as safe.

So I am curious how the seller could be ripped off with a true wire transfer. Now as a buyer that may not be acceptable and you have to find some other way such as escrow.