CAVEAT EMPTORPlease take care buying and selling here especially with WTB ads, the scammers will PM you with (usually) a referral to a third party. Be very careful of new posters, posters with low post counts, posters who have not participated constructively on this forum. You can search their posts, that is not snooping when your money is at risk and you know there are scammers everywhere - it is called 'due dilligence' in the business and commerce worlds.
CAVEAT EMPTOR.To search a user's profile, click on their user name, view 'overview', and click on 'view user's posts' and you can see their post history. You can also see when they joined, and then it is just a case of connecting the dots.
Regardless of what that sort of search throws up, remember you are dealing with anonymous people who you don't know. Buying and selling on the interwebs is risky, act accordingly.
CAVEAT EMPTOR