You're making several assumptions here.
I think the club causes the supply problems by under-ordering. Barber has gone on record to say that Bloom doesn't want reduced-price shirts on hangers at the end of the season.
In reality, the fault probably lies a bit on both sides.
Indeed. Very little training gear left now too.
So what would an extra shop in town be selling from April to August?!
If it’s just own-brand stuff, might as well set-up a market stall…