Dammit my posts keep disappearing.
Anyway, when I researched doing tokens awhile back, I thought the minimum run was around 5000.
The price gets pretty reasonable, but you have to factor in the dye costs, any other design and time costs, shipping and then that whole re-shipping and make back your money costs and keep it reasonable enough for everyone else to purchase.
Gets steep and I don't think I'd want to place a 5000 order unless I had a break-even reached.