Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

I rather think that Jin is just a member of a group that does the manufacturing, and that he is one of possibly a few different members of the group that acts as an outlet for the group. Don't know if he "buys" from the group wholesale, thus acting as a middleman distributor, or if he is actually acting as a frontman for the group.

In any event, he or they often start the sale of a new product offering deep discounts, acting in the capacity of loss-leaders and trial balloons, to gin up public interest, then eventually settle into a fixed price point that works for them over the long haul.