I got my covers from Michael in Taiwan.
It was a few years ago, but for 2 seat covers (4 pieces), 2 door cards, gear & handbrake gaiters and the centre section of an elise steering wheel it took about 4 weeks to make & deliver to UK.
It was a bit of a faff to fit the seat covers - not diffiult, just time consuming to do properly (to a decent standard), and i think another time i'd rather pay someone to do that for me - others at the time were paying a couple of hundred for the fitting (pounds or dollars, can't remember

).
I had every option - 2 colours, higher grade leather, leather piping and still got change from £500.
No doubt the prices will have increased a bit, but even if you got a 'local' upholsterer to fit them, they could represent good value.
see
this thread for more details, or
this one a few pics for the fitted job on my 'for sale' thread
here