Hi, we only sell the entire wheel as a replacement part from the ADJ parts website.
The huge cost is doing custom gobos, but most places standard steel gobos from an already made catalog of gobo images should be no more than around 20-30 bucks each gobo per fixture.
take a look at https://apollodesign.net/gobos/by-type/metal
Tons of designs ready to order, just be sure of the correct gobo size, which for the pocket pros should be listed in the user manual for the fixtures.