All of the LGS in my area sell out of most things as fast as they get them in. Many of them will post the new arrivals to their facebook page and in many cases, unless you are in the store at the time of posting, they might be sold out before you get there.

I lucked out and bought a 9mm Shield because I was in the right place at the right time. There is such a demand with unknown time frames for availability , that most of the local places have done away with putting deposits down, waiting lists, layaway, or other programs.