Yep, these dayze the web-o-net is fulla scammers, Do diligence is required no matter what.
Before placing an online order off a site, check out the site itself for contact info. There might be nothing other than an email contact form to fill out = red flag.
Do a BBB check on the website's URL address - that might be illuminating.
ANY vendor site that offers up products with price tags that appear ridiculously cheap are almost always scammers.