Right now there's 2 options:
Phat direct via Garage88 for K2Gear 3d mats.
or
Wait a couple of months for a similar (non K2gear branded) product for Gen4 at a much lower price.
I'm sorry but we couldn't reduce the shipping cost on the boxed sets.
It could be possible if you had a close contact in J on a one-off basis.
I could do this but not for 20+ units...
Personally I'm pursuing the second option, via the local distributor who is awaiting stock.
More details soon!