There are so many red flags with this website that I personally wouldn't go anywhere near them. As already mentioned, the domain only recently registered? Doesn't appear in BBB.org database? Violates Craigslist's posting guidelines for local only posts? Not to mention, no contact address or phone number?
But the biggest red flags are the payment methods? They don't have a credit card portal, despite the Google checkout mentioned. Look for yourself:

Notice that nothing directs you to Google checkout. But apparently wants you to supply your personal financial info, which is all that would be needed to effectively steal your identity.
If you look at the second payment method, the GreenDot Moneypack card:

This is just like cash, and has become the new Western Union wire type fraud used by scammers. See this AARP article
Beware of Green Dot MoneyPak Scams.
Still want to order that Honda generator?