Probably right. Seems pretty hit and miss whether you actually get a copy or not. I had problems with a similar site (I paid by Paypal and they refunded my money without question - obviously dealt with the site before). Sometimes it's worth taking the chance if you really want something but it really is a case of caveat emptor
The general consensus is that, once someone orders something, they then look for a source to rip it from for you (ie made to order) be that VHS or a recording from TV. Some items are probably impossible to obtain. Generally you don't get it but, as I say, using PayPal it may be worth a shot if you don't mind the hassle. Personally I wouldn't risk using them for anything obscure enough to have to use them.
AFAIK that movie has never been released but was shown on the Turner Classic Movie channel some time back so the best to hope for is a rip of that showing somewhere. Chances of that are pretty slim here I think.