I think I found a steal on CL!

I'm getting Yoshi Island Star Fox Super Mario Kart for 19 dollars from a guy on CL. IDK if they are CIB (doubt it) but this is steal right?

yep. I'd guess $40-$50 would be the eBay value.

It would be a steal if they were complete. Loose, I think you're just merely getting a good deal.

Star Fox is a $5 game. Kinda sad considering how good it is, but at least it means more people would be willing to play it. :)

Super Mario Kart goes for $20 - $30 cart only. Have no clue on Yoshi's Island. I bought my copy several years ago (like early 2000s).

I bought SMK cart only from Ebay recently for $20 plus shipping. A used game store by me had it for $24. You got a really good deal here.