Bitcoiners are weary to spend their sats especially on luxury apparel. But I know you don't want to compromise on quality and i applause you for that. That's a tough spot to be in. I've wanted one of your belts for a while but it's (understandably) spendy.
Have you considered pivoting to smaller collectible yet functional bitcoin related items? It might raise your cost in time but thats just proof of work! maybe you can use less materials and can lower your price point this way? You could reach out to meetup and event organizers to sell items in bulk for attendees. Numbered dogtags have been a thing for nostr/bitcoin meetups. What about leather embossed dog tags? I bet there's a market for that!