Check out these search results
https://m.ebay.com/sch/i.html?_from=...te=1&LH_Sold=1
I had someone bring in one of these Gretzky cards a week ago which brought this to my attention. It is a Gretzky room key promo from the National with a picture of a Gretzky card on the front so it is not actually autographed or numbered. There are 4 sold listings. One sold in a lot with a McDavid for $12. PWCC sold 3 of them for between $130-170 each time it “sold”.
This is probably worth about $5-10 to a Gretzky collector who needs to have every card IMO.