I'm with going to the PX all the way!!! They're just uniforms. The Marine Shop ain't that much better, they're just a little more nicer to you. Besides, depending on where you're stationed, you're not going to wear that stuff ever again other than probably in this order:
Ground Marine Officer:
1) Check into first duty station in Service Alphas
2) Wear cammies everyday
3) Dress Blues will probably only be worn at the Marine Corps Ball
4) If your in some formation for a battalion/company inspection wear you're inspecting your Marines in Service Alpha's or some Alpha variation most likely because enlisted Marines aren't required to own Blues.
Air Marine Officer:
1) Check into first duty station in Service Alphas
2) Wear flight suit everyday
3) Dress Blues will probably only be worn at the Marine Corps Ball
4) If your in some squdron inspection wear you're inspecting your Marines in Service Alpha's or some Alpha variation most likely because enlisted Marines aren't required to own Blues. However, you probably won't even have that because the Air Wing is too busy for formations, or too spread out.
Lawyer Marine Officers:
1) Check into first duty station in Service Alphas
2) Wear cammies or Service Alpha variation everyday.
3) Dress Blues will probably only be worn at the Marine Corps Ball
4) Don't do formations usually unless attached to a MEU or some kind of headquarters unit, then you just stand there in whatever uniform and inspect other Marines.
If you get tagged for Recruiting Duty or some other duty you will dust the Creighton shirts off and actually use them. Then you'll say to yoursef "Wow I'm glad I bought these way back when," or "My butt is too big and I need to find a bigger size. Wow I didn't realize how small I was back then!"
Besides the fact that you will lose stuff, gain stuff, get bigger, get smaller, and end up buying something more than once. Especially if you get augmented and continue pass your first obligation to the Marine Corps.
I hope that helps.