Yeah, there are many scams out there that are off a similar nature where they claim that they have made your order for you however they haven't done so. This is where tons of research comes in. I only use a site, or rather try it on a small item first that is a few dollars, and if that item works through the third party then I decide to move on further and use them to order more items, otherwise I consider it a risk and a loss, but a small loss. It is important to try them out I guess, because whilst the reviews may be good people can often lie on reviews as well.