If you work out of a studio, you know how annoying paper seamless backdrops can be...they always wrinkle and warp. We recently changed over to the Savage Vinyl backdrops and they seem to last a lot longer. The guys over at OKstrobist have an even cheaper alternative for those looking for a DIY approach and it's pretty clever. Even though this can still cost as much as $170, you aren't stuck with the shipping costs which can be as much or more than the actual roll itself. Has anyone else tried this or have thoughts on places to buy cheap vinyl?