It seems there was a glitch in the system which was automatically adding on the extra for shirt printing when changing sizes. It seems to be fixed now and they are all priced at 45.
I should have realised that the pricing was wrong but then I remembered it was Nike and it kind of made sense. 😊
I quite like the new home kit, and am happy that its for two seasons but 58 quid for a large is a bit steep. Still unsure if I'm willing to cough up that sort of cash for it.