I suspect the recent prices hikes are mostly due to the GBP being near historical lows.
From the US perspective, they're the same or cheaper than they've ever been.
I bought a pair of standard Acorn Stows in 2010 for 251gpb. They're 325 now. But in terms of US dollars, they're both about US$400.
Crockett & Jones are pretty cheap for US customers too even with their recent increase.
(I'm kind of surprised C&J hasn't tried to implement global price parity ala Carmina. Ain't...