How do I value this? (Uncut sheet XMen trading cards from 1992)

Factual Questions
1

So I have, framed in glass, an uncut sheet of “Hunter/Prey” XMen trading cards circa 1992 - consisting of 18 each of “Prey Jean Grey Cyclops”, “Hunter ArchAngel”. “Hunter Stryfe”, “Hunter Dark Riders”.

Its just cluttering up space and has been for years.

Is there a market for these things? And if so where do I go to get a sense of its market value?

Thanks for any information.

2

Have you already scoured eBay for auctions of similar items? (Be sure to search for completed listings, too, so you get an idea if any of them actually sold and for how much.)

3

How do I search completed listings? Sorry, but when it comes to eBay I am beyond ignorant. I can find a few of the cards on that sheet of 72 listing for sale at $2 each and some other sorts of sheets, a set of 12 of the cards for $34.95, but nothing quite like this.