I like the one I got from Walmart -- They are $13.54 or you can get them for $13 even online with an IAMs puppy kit!
http://www.walmart.com/ip/OUT-Puppy-...y-Kit/16504675 I say I like them but that is not the general consensus of my pups. They do NOT like them. They use the pads just fine by themselves but sometimes a bit may come off the side or seep underneath, so I wanted the pad holder. But once I put the pad into the holder, they will not use it. I don't know what the deal is -- not one of the 3 will use the pad when in the holder. It's like they made a pact between themselves and just won't use it. I'd sell it cheap but shipping would not be reasonable -- cheaper for you to just go to Walmart and buy one or two.
I have only read one other person who said their dogs would not use the pads if it was in a holder so I don't think it is a wide-spread problem. I probably should try again and be more patient this time, but I don't want to have them going off the pad again either!