Ran across this from a link on craig's list of all places. http://www.deltafaucet.com/bath/details/656339ac.html
Seriously thinking about one of these. Love the built-in trench drain. Only 1 -1/8" above the subfloor. Tile + backerboard usually runs about 7/8" so practically no curb at all - just enough for a good bead of sealant. Retail price isn't too bad as far as ADA stuff goes. Certainly much cheaper than building a proper one with mud set and tile. We'll see what HD says for price.