There are loads of fly-by-night camera gear sellers and stores online, and not all are made equal. It's easy to get tempted by bargain-barrel prices, especially if you're shopping on a tight budget. Here's a quick rule of thumb: if the price is too good to be true, it's a scam. Here's a list of warning signs to watch for: Rock-Bottom Prices Funky Seller's Name/Store Name Warranty Return policy Complaints Skip ahead for reputable sellers that I like. Too-Good-to-Be-True Prices…