This is the bulk of my collection because that's when I returned to buying cards from racks to boxes. It lasted only those few years from 89-92, thus my Trade List is comprised of much of that.
Anyway, I agree that if one uses the price list to trade, things need to be updated. I have yet to find any cards being sold for $0.05. Check Sportlots and the starting price is $0.18. Amazon $0.35. Beckett Marketplace $0.25. Ebay $0.99.
Now I'm biting my own hand because as I'm collecting my Astros team sets, many cards still fall in this era, I may be seeing the end of getting two-for-one in trades if pricing is updated.
I also agree that the value means nothing to me when I own a card I wish to keep. And I've been blessed immensely by some who trade based on each other's needs with some consideration for price at times, but not based solely on that.
"So let the children fly
And question all they see
They'll grow up wise and penetrate
The life that lives unseen"
From "When" by The Call (Written by Michael Been and Jim Goodwin)