If it's anything like in the Memphis area, they will go quick.
I live pretty much across the street from a walmart, and have been keeping tabs on their 9mm inventory. They seem to get in 40 boxes at a time(?) The last shipment of 40 boxes was put out one night last week, and they were down to 3 boxes by noonish the next day. They say that's typical. Apparently the 100 round WWB 9mm moves just as fast.
I managed to get the last two boxes of Remington 115gr JHP the week before last ($24/100). They said their supplier had no jhp at all now. Probably no point paying extra for that particular jhp anyway though.