WHY ARE WE CHARGING DIFFERENT PRICES ON THE SAME PLAYER?
You may wonder why the price is different between two shirts, when it in fact is the same player that has signed both the shirt.
Well, the answer is remarkably easy: There are limited editions left on the market of the product with the higher value.
For instance, a Real Madrid shirt that is signed by Ronaldo, is worth more that a Juventus shirt signed by Ronaldo. Why? Cause he plays at Juventus now, and his priorities are to signed those jerseys.
To make another comparison: A shirt from when Portgual won the European Cup in 2016, is worth more than a Real Madrid shirt signed by Ronaldo. It's all down to scarcity.