First listing that came up. Cheaper and in better condition
That’s an AT101W, the type with later (“bamboo” = no slits, not as nice to type on) black Alps switches, printed keycaps, and the new Dell logo. Those are super common. The old-logo versions go for much more on Ebay. Especially the ones made by Alps with salmon switches, but even the Silitek black switch type.
I think the OP’s AT101 might sell at $70–80, but it also might not sell for any more than $50, or not sell for a few months at that higher price.
But then again, what do I know? Ebay buyers pay ridiculous prices for stuff all the time.