Value of bulk cards?

I have about 10K cards I want to donate to a charity, mostly from the late 80s and early 90s, both hockey and baseball, including Topps, UD, O-Pee-Chee and Score. Any ideas what they are worth? A penny apiece? Two cents? It's mostly common stuff, but there are a few complete sets. Any ideas will be appreciated! Thanks!
JoHoNew
JoHoNew
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Steve
1977 Topps Star Wars - "Space Swashbucklers"
Collecting 1970s Topps baseball wax, rack and cello packs, as well as PCGS graded Half Cents, Large Cents, Two Cent pieces and Three Cent Silver pieces.
WTB: 2001 Leaf Rookies & Stars Longevity: Ryan Jensen #/25
Nick
Reap the whirlwind.
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JoHoNew