i'm curious if anyone has a verified source of the correct heat pad as of late. $13 is pretty unbeatable but if I decide to go for it, I don't want to end up with the auto off only option.I ordered the discontinued Sunbeam model 756-500 trying to be sure of avoiding auto-shutoff. $13 on Amazon. I saw a few reviews where people had ordered the newer version of this one (731-500) but then received a different model that has 2-hour auto-off (which cannot be disabled). Sunbeam's website reveals this to be a different model but I do wonder if this means the 731-500 is also being discontinued? After all, they are identical other than this one crucial feature so why would they continue to offer both? I hope I'm wrong because $13 is much more appealing than $30 (for the model offering auto-off override). The whole point of DIY is to either make it better, make it cheaper, or (preferably) both!