No worries!
It’s a tough balancing act paying for all the different hobbies. But the balisong community is just too young for anything streamlined/affordable to be an option yet unfortunately.
Personally, I would love to try and make a trainer with FPM, releasing it at an affordable price point. I don’t think trainers take as much precision as yo-yo’s, and no live blades to sharpen.
Gl on your search.