Thats one of the perks about owning your own business I guess, open or close whenever you want.
For an Archery shop, its probably a little slow right now with the seasons being a couple months away. Being the July 4th holiday, it wouldnt suprise me if a smaller local shop would shut down unexpectedly.
I dont think he/she looked at your MA Tags and discriminated against you in any way but it probably didnt help. Why open the doors for a few minutes to someone he/she will probably never see again??? Esp since you said it was just for a few small things. If you' s said you were going to spend a few hundred bucks on a whole new set up, you might have got a little more attention. Is that the right thing to do on his part morally?, no, but since when has business had anything to do with morals??
