TBH from all my sales on here and manhattanreefs, I've only had 1 where the first person who said they'd buy something from me actually did. Every other case was people making lists of other items they wanted too, haggling prices, even setting up pick up times...just to ghost or back out of the sale. It's why I won't frag anything to order unless I'm paid up front. It's messed up you couldn't venmo the guy but if I was you it's not a smart move to venmo someone you've never met for a tank you haven't seen, and I understand wanting to not lose the sale from someone ready to pay and take the tank.