They look like they're zippered for easy removal, but with what Cindy said there (I didn't think of that at first) it almost looks like a solid strap between them.the strap probably has some holes for various positions of the bags. You just want to make sure that they won't hit the exhaust pipes on your bike.
Ya know, that's a good point about the price. I got my Willie & Max slant bags off of eBay for maybe $35. They needed a little cleaning up, but for the price, it was worth it. Jetboy, maybe you want to eBay it first? There's always a million bags for sale.these look ok although i'm personally not a fan of studs.it looks like you most likley will not need saddlebag supports with these, but from what i see you will definetly need to shorten that piese in between connecting them to put them higher and not touch the pipes. or maybe move them further back (although then signal relocation is a must as probably the supports) hard to gudge the quality from the fotos. IMO 100$ is not a trivial ammount of money for these.