Which Lass do you have?
Same name, 28× the price: $3.11 to $86 raw. The difference is printed on the card — it is just not somewhere most people think to look.
Base Set 1st Edition · #75
A black 1st Edition stamp below the left of the illustration. These are also shadowless - the stamp is the thing to look for first.
$86
11% gem
Base Set Shadowless · #75
No stamp, and no drop shadow down the right edge of the illustration frame. The card looks flatter and slightly paler than the common printing.
$8.22
23% gem
Base Set Unlimited · #75
A drop shadow down the right edge of the illustration frame. This is the common printing - most Base Set cards people own are this one.
$3.11
22% gem
Base Set 2 · #104
A set symbol in the lower right of the illustration. The 1999 Base Set printings have no set symbol at all, so its presence settles it immediately.
$3.49
35% gem
Expansion Pack · #
Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them.
$3.69
no PSA data
Prices are raw market value. Click a printing for its full grading verdict — the gem rate, the fees and whether it beats selling raw.