Thank you for the clarification. If it does indeed include this full service of impressions, cost of shipping, as well as professional handling of the entire affair, then perhaps the pricing is a lot more sensible and reasonable.
That said, I do believe AmpCity's scale is still on the high side. However, I've given it some thought and this could potentially be attributable to the high tax rates in the UK.
Just to add some further clarification.
UM Australia and UM UK both offer full service (ship your impressions to us and we ship your custom back to you), this may or may not be the case with other UM Resellers. Afaik UMUK also include the price of your impressions appointment in the quoted cost on their website.
Whilst I can't speak for UMUK, when ordering internationally (Outside of Australia) and shipping directly to UMLab, a slightly different (cheaper but less secure) pricing structure exists. The minimum for a good courier service from Australia to China is around $45AUD. Not sure on the US or the UK, but I'm sure it would be in a similar range, possibly more in the UK which makes our pricing structure make a bit more sense.
Still showing $929 from the US distributer and $950 from the Australia distributor, which works out to roughly the same price. Ampcity seems a bit high, partially accounted for by the exchange rate, but not completely.