WTB several harder to find variations

[My_Long_Juan]

So I would like to buy....
1990 CMC "English Leather"
1990 Bowman Blank Front
1990 Donrus Rev. Neg. Blank Back
1990 R&N Topps Porcelain
1990 Score Blank Back

[Charls922]

1990 R&N Topps Porcelain....$ ????

[My_Long_Juan]

Well I was hoping the seller would come up with a reasonable dollar amount. And we could finalize on a price.