Wal Mart RO filter???

I came across this RO water filter at WalMart for under $200. Is it too good to be true??
http://www.walmart.com/catalog/produ...uct_id=2064241
Adieu

http://cgi.ebay.com/AQUA-SAFE-100GPD...QQcmdZViewItem
How about this one ? As long as the R/O membrane is decent quality, either should work fine. Has anyone used one of the cheap Ebay R/O units ? If so, how well did it work (what ppm was the TDS before and after filtering) ?

cheaphydroponics.com has a spectra pure 90gpd for $179. It seems nice and works well. It doesnt have the canister or fixture, but heck I dont need em for this application. All I needed was a faucet adapter which I already had for my waterbed. If I owned my own home, I'd have gone for a bigger permanent system though.

With the walmart one, I'd just search the web for replacement filters to be sure they're readily available. Provided that, then it should be good.