its the same in the championship and football probably, in general, they say gambling, drugs etc are an addiction well football is very similar and club's, manufacturers know it...
they do take the mickey with prices for replica shirts when they are probably made in sweatshops for as little as a couple of quid...
I'm addicted to my football but thankfully not football tops
https://www.thesun.co.uk/sport/19433074/premier-league-kits-rip-fans-off/