I don't think you'll have any luck at Toys'R'Us, since they only thing they have left of Tamagotchi is some figures and that's on there website.
I think the only way you can buy them now-a-days is to order them off Amazon I'm sorry to say :(
Hm... lets give them until September, and if it's not back up by then, it probably means they pretty much have given up on the site and let it deteriorate :C
Or we can spam them to death with e-mails and phone calls till they reply