For a little more context on this: Whitman is a publisher that would reprint a lot of books during that era, mostly Marvel and DC titles. These Whitman versions would often be sold in poly-bagged sets of 3 or 4 comics, sold in department stores, convenience stores, etc. Something like $0.99 for 3 or 4 comics, which was a great deal for a kid needing to stretch their allowance (See pic attached here). I think it's more accurate to call them reprints than "variants", but the seller isn't wrong about that ... they are variants.
While not as valuable as the 1st printings, a lot of completists like to collect one copy of EVERY variant, so they do have a bit of value.
I'd say yours is about a 6.0, thanks for sharing!