Are these Nike Blazers (Purple Rain) fake?

Here's the link: http://www.ladunk.com/nike-blazer-high-premium-sb-purple-suede-p-217.html I want to get a pair of Nike Blazers Purple Rain Edition, and this website has the pair for a low price, but I'm suspicious that they are fake. How do I find out whether or not they are real? The shoes are $75.00, and that's generally low. Please help?