10 of their 8-man trays would cost me $24 (£15.50) plus $14.40 (£9.29) in shipping charges. That's 60% of the order value in shipping charges.
If I were to order 50 of them (out of curiosity sake to make a big order...) it would cost $120 plus $60 in shipping according to their cart - 50% of order value for shipping. Somewhat excessive, I would think...
That is the same for any order to the rest of the world.
EDIT:
To compare, when ordering from 4Ground, it starts out with a somewhat pricey flat rate of 10GBP for shipping, but once your order hits 50GBP it drops to 5.5 GBP.
So if I were to order 50 of their 8-man trays (actually only 17 of their base packs, as each one comes with 3 movement trays) it would cost 25.5GBP (~$40) plus 10GBP shipping ($15.50), which is about 40% of the order value for shipping at that rate. However, with such value for their product, I would likely order another 25GBP of product to get the discounted shipping.
Too bad their 8-man trays aren't skirmish trays... perhaps I will send them an email about custom orders. It would probably still work out cheaper, and I bet they would sell really well for the price point if they made them widely available.