JMHO - - - - - -
Frankly, it kinda makes sense for the O.P. to not state the price he paid. If the source runs a small, independent operation, he's liable to be paying differing prices for the carts he gets depending on their condition, etc. Thus he would more than likely be selling each cart for somewhat different prices based on what all he had to do to get them up to snuff, all other things being equal. Also, options the O.P. got on his cart might differ from what someone else might want on theirs (I noticed his cart has a painted top) and thus would impact pricing.
Stating the price he paid might wind up misleading a potential buyer.
Maybe I'm off-base.....maybe not!

If I was seriously interested in such a cart, I'd contact the seller for the details.
Bill