Golf 4 recaro leather seats

Hey guys,
First i’m sorry for not having the best english :D

So I wanted to know if some of you know how much golf 4 reacaro leather sportseats could be worth.
I don’t mean the GTI 25 years edition seats. Mine are from a 2000 golf 4 and the seats came as special optional leather seats. They are just Black sport leather seats (not the race ones) with a recaro logo stamped in. I found a lot of people talking about the GTI version but nobody about the “normal Golf 4” ones.