Hoskinson-industries is now offering a replacement shell for Atari Jaguar cartridges. They’re available in three different colors: Black for $3.50 which should match the original, plus yellow and transparent blue which are both $7. This is the same company that is selling the Jaguar “pro” controller, which was received well: https://hoskinson-industries.myshopify.com/collections/frontpage
This is an excellent choice for developers who want to sell copies of their homebrew games, as it would end up with a unique-but-official look, without sacrificing any original cartridges! Also, the creator of these says they might be interested in making full Jaguar replacement shells, however that would be very expensive. While I normally love replacement shells for damaged units, I’d be more interested in an injection-molded shell if the Duo project is able to be completed.
Check out more info on atariage: https://atariage.com/forums/topic/314836-brand-new-atari-jaguar-cartridge-shells/