We must also take one more think in calculation, GPUs usually have 3 year warranty on them, this Acorns cost some nice money but question is will they ROI themselves in time before they die?
I can go to may local store to return GPU but for Acorn I don't know how much warranty I have and where to ship it if it start acting weird or die competently.
With 24/7 operation that is something that must be taken into account.
ps. Can someone tell me the difference between their shipping methods?
$129.54 International Economy FEDEX
$181.30 International Priority FEDEX
$75.00 Fixed Flat Rate International
Remember its an xilinx fpga, so its not some cheap chinese asic core, you still see manny of their 10 year old fpga's arround working.

the shipping prices take the piss tbh $75 flat rate for an item that weighs what 2 oz max to to the uk ive had loads of items shipped from the states to the uk and not at prices like that i think they are making a profit on the shipping as well not a good sign Also there shopping cart is trying to put tax on the total as its being shipped out of the states i dont pay tax on the item