Looking to buy
 

I’ve been working on a run of Topps from 1951-1991. I’m looking for the cheapest cards I can find to add to it. I’m only looking for PSA graded copies. Right now I’m looking for the following years:
1951
1953
1954
1955
1958
1959

I don’t care the name and I’m looking for the cheapest cards possible. Thanks