After reading the critic's glowing review for Gunlord on the Sega Dreamcast, I looked into physical copies of the game. I'm a huge Turrican fan, and this game was a spiritual successor. I found out the game was enhanced and released as Gunlord X on the Nintendo Switch and PS4. The physical copies sold out quick last year before I was even aware of the game. NGSDEV-Direct decided to do a small second printing of the collector's edition (199 copies) and they are selling new old stock of the standard edition, with very slight flaws on the packaging, as used with a discount. These won't last long! I just ordered a collector's edition. Here's the link if anyone is interested:
https://www.ngdevdirect.com/