Airscape, if you're talking about the Meguiar's DA Microfiber Correction System you should check out either autogeek.net, autodetailingsolutions.com or detailing.com - all three carry the whole system and all three have great pricing.

For use with a typical DA buffer you'll want the correct backing plate to start (it's pretty important, actually) so pick up Meguiar's part number W67DA. You'll also want a two pack of DMC5 cutting discs and DMF5 finishing discs, then a 16 oz bottle each of D300 DA Microfiber Compound and D301 DA Microfiber Finishing Wax. A good pad brush is critical as cleaning the pads after every single pass is critical And yes, just a 16 oz bottle of each is more than sufficient to correct your own car a few times - a very small amount of product goes a very, very long way.