If the club had their heads screwed on they'd sell pre-printed shirts like every other big club. Markup is huge and the lack of a looooong wait would tempt people into spending more.
AND you could take returns.
Insane isn't it.
I get that they want to stop people asking for a refund when their beloved player leaves a week after they got their shirt printed. But PL patches? Just stick it on the shelf FFS, it will likely be sold faster because there's no need to wait!