I can't believe I'm defending Group on but.. the normal price for that set is 1000 yen. Furthermore, it's for the lunch menu (ランチバイキング) and the time restriction is such that I doubt they'll ever have to honour all of the coupons. (Furthermore, they are cooking in bulk and you are stuck with whatever they have; I doubt they will strain themselves with the deal)
I can think of a few places that are all-you-can-eat (tabehodai) for 1000 yen. I wouldn't bet on the quality of food, but sometimes you luck out. 500 is insanely cheap, but it is near the break-even point (if you aren't including rent)
I can think of a few places that are all-you-can-eat (tabehodai) for 1000 yen. I wouldn't bet on the quality of food, but sometimes you luck out. 500 is insanely cheap, but it is near the break-even point (if you aren't including rent)