British Made are better both in terms of quality of finish and how the shave feels. USA can be so-so and are often very tatty. With British, it's pretty easy to get a very good quality for not much money.
Posted, eBay, expect to pay £12-£15 for the razor and £20-£25 for a cased model. Naturally, there are one or two models which will attract more but it's pretty much just the Sun Ray, a 1912 with Art Deco patterns all over it. Rare.
Go careful as there are eBay sellers either mistakenly, or otherwise, selling regular 1912s for silly money ... like £100 ish.
I never gazump people when they come to me privately asking about specific razors so if you want to run a few eBay possibles past me, I'll happily say "yay, or nay" by way of advice to get you a good priced razor.