There is a guy on eBay that advertises quite regularly (usually Sunday nights for some reason), and goes by the name "britboy". He sells re-chromed original surrounds for about $300 or so (if I recall correctly) and says they are first class, moreso than the usual suspects. But he wants your old surround as part of the deal, and it must be serviceable. Add in the shipping, etc and it might be expensive, but the cost of rechroming is outrageous in any case. Can't speak to the quality of his product but I did email him some time ago and he seemed like a decent guy. Perhaps one of the other BCF folks have used him....I've heard the horror stories about repro surrounds - heck, the originals are hard enough to fit properly as it is....
My two cents.