question: best way to get mint late 80's/90's cards from unopened

I'm looking to buy some 1987 thru 1993 topps cards and does anybody know the best format to buy? rack, wax, cello, vending? which do you guys think would be the best bet? thanks
WTB:
CINCINNATI REDS
1976 - 1991 - Topps PSA 10
1983 & 1985 Fleer PSA 10
1985 Donruss PSA 10
Blue Ink Signed Topps Cards
Game-Used Bats/Jerseys
OPC PSA 10
MC & OC Cards
OTHER:
Eric Davis Anything
Votto, Willingham, Cantu, Doumit, Gomes
Baron Davis Game Used Jersey
CINCINNATI REDS
1976 - 1991 - Topps PSA 10
1983 & 1985 Fleer PSA 10
1985 Donruss PSA 10
Blue Ink Signed Topps Cards
Game-Used Bats/Jerseys
OPC PSA 10
MC & OC Cards
OTHER:
Eric Davis Anything
Votto, Willingham, Cantu, Doumit, Gomes
Baron Davis Game Used Jersey
0
Comments
Bosox1976