Just been playing around with the Fedex site and worked out these rough figures:
1 Remote - $ 97US ($97.00 Per Remote)
2 Remotes - $113US ($56.50 Per Remote)
3 Remotes - $125US ($41.66 Per Remote)
4 Remotes - $141US ($35.25 Per Remote)
5 Remotes - $160US ($32.00 Per Remote)
10 Remotes - $275US ($27.50 Per Remote)
Or if you look at it a different way, with a base rate for every person that wants one unit then an additional per remote cost:
1 Person - $ 97US ($16.00 for additional Remotes)
2 People - $ 56US ($12.00 for additional Remotes)
3 People - $ 41US ($16.00 for additional Remotes)
4 People - $ 35US ($19.00 for additional Remotes)
If 2 people buy 1 remote each plus you want an extra one, you'd pay $56+12=$68
If 4 people buy 1 remote each plus you want an extra one, you'd pay $35+19=$54
i.e. everyone shares the base cost one time, then pays more if they want more than one remote.
Using this premise, I can't imagine the extra dongles costing more than $3 US Extra.
If just the 3 of us buy remotes so far it'd be
mortar - Remote + Freight = $149 + 41 + 0 = $190US = $215.63AU + $10 Freight = $225.63 (saving of $53.34AU)
colinjones - Remote + Freight = $149 + 41 + 3 = $193US = $219.01AU + $10 Freight = $229.01
RichardP - Remote + Freight = $149 + 41 + 6 = $196US = $222.43AU + $10 Freight = $232.43
Not a fantastic saving, but i'd say worth the effort. If you can get it from Brisbane for $249 and the freight is around $15, then that method will cost you about $30-35 extra then direct from Fiire.
Obviously these aren't final figures, but they'll be pretty close to it, and allow anyone to work out their options and the cost differences in adding additional remotes or dongles that they'd like to purchase. So the more the merrier, if we get more people, we chop down the cost further!