I'm pretty sure you just went a long way toward answering your own question. For that price, I would need a non-qualified money back guarantee that the product would work to allow less than X amount of seepage per Y unit of time. BUT...if there was such a guarantee, it may well be worth it. Options are draining, drying, installing liner, getting the seams to stick right, etc., for a plastic liner. A lot of work for whomever undertakes it.
