Since there's no "very bad vendor thread" I just wanted to warn people about marinenutz.com
I purchased a mount for my boat BBQ from them, because the product was discontinued but they were the only people on the Internet still listing them in stock. Turns out they were mistaken, and sent me a mount for a totally different BBQ, one that won't work and normally costs half as much money!
They have basically stolen my money, because I still haven't been able to get a refund after 7 months. They usually take about a month to respond to e-mails, and never answer phone calls. They did send a shipping label to return the incorrect product, but it arrived 2 months ago (it took 5 months of pestering from me to get a return shipping label)- and they still haven't refunded me any money.