The seller ships quick!
I got those 3 legged ones in the photo on craigslist for $75 and another set with four legs for $100 on craigslist. The four legged one looks like this only it's also in silver. I found them in the furniture section searching with the word "audio".
I search with the word "rack" on other sites.
I may paint them black if I can find enough fingernail polish.
Just make sure you take into account that Fry's are new with the 5-year warranty and the eBay store MAY be refurbs with the 2-year. Mine are refurbs.
I can only say you'll get the best value with those RTi12's with the price being that low. That's a heck of a deal. As far as which ones would sound best to you is anybody's guess. Agree on the white woofers. I'd have to leave the grills on.
One thing is for sure. No going wrong with that sub. Nice!