I buy the 24 X 36 size pads from Ryan and LOVE them! They are at least twice as thick as any other pad I've tried and the larger size makes for much better accuracy! You will get twice as many for the price you are paying from Fosters too!
23"x36" Puppy Pads
I get mine in the case of 150, packed 10 to the pkg. I love these pads (as much as one can love a pee pad!

) Customer service is also a huge plus. When I order, they come in no more than 2 days! Sometimes they are there the very next day! How he does this is beyond me. No one else delivers to me this quickly. I think he has an "in" with Fedex or USPS!
Don't want to knock your discovery, but wanted to let you know about an even better deal!

I had never seen the large pee pad holder you listed though. Mine will not walk onto a pee holder to use it. Weirdest thing I ever saw. They will walk around it, whine from having to go so bad, and finally pee beside it! Not just one of them but all 3!!! How is that even possible when other dogs use them just fine? I think my dogs talked it over and decided not to use it. But if they would use it, I'd love to have a large holder. The 2 X 3 foot size made a world of difference in the accuracy of my pups. They stopped peeing off the side of the pad for the most part. There is an occasional miss but not like before. Try Ryan -- at newpuppypads.com you won't be sorry!