With the announcement of the Solarman movie development, the book has been selling extremely well. Scout has been putting out books with print runs of less than 3,000 copies (not sold but they have stated they have not had a print run of higher than 3,000 copies.) Here is a variant that could be good.
Solarman #1 CBFS Variant has only one listing on eBay at the moment. The print run is 250 copies and the art was done by Paul Green, the artist behind those popular cosplay variants from Zenescope.
They were on Ltd Edition Comix website for £9.99 plus shipping but could not add to my cart.