Your link does not work as it is to the cart, assume this is the item
http://www.sporthitech.com/nummech-contour-camera-paintball-barrel-mount/
Sorry, I'm not stepping in to buy as well, just a bit of advice
Watch out for stepping up the value of items to compensate for international postage
A single item may be below import duty/import vat thresholds and postage is expensive
Add extra items and postage becomes more reasonable, but the goods value goes up.
Push past the threshold and custom charges apply (guesstimate at 20% for import vat)
This may not be a lot and offsets the single postage, but as soon as a customs charge applies you have to pay the courier handling fees - could be £8, but some charge £20. All irrespective of the value and custom charges
If you arrange a bulk but with other players and they are not local, or not at events you attend after it arrives then you have to post their items on to them
Do your homework, work out all of the costs and get the other buyers to agree on the expected costs. If it ends up without extra charges then everyone wins