The UK deals have a long validity,if they had a short validity then a chance. This is all the deals in the Prime Day event. USA is different. Random selection of UK deals, they all the same, 3 days.
So, typically, the USA is getting better deal opportunities as they will be getting more new deals tomorrow, so USA members here are more likely to encounter a match to their needs. The UK won’t be getting new deals tomorrow as we have to wait for these to expire at the end of the 3 day event.
The typical first discount of a product is 18%, then over a period we inch to about 30% via combinations of discounts and vouchers, so about £33 is very likely over next weeks. Just not this week. Pity.