Nige - Here in little ole West Oz, the chrome platers are nearly all gone, and there's only 3 hard-chrome platers in a city of over 1.8M people.
These 3 hard-chrome people all drive Cadillacs & Rolls Royces, and they make anyone who wants a rod re-chromed think they're getting gold-plating, not chrome plating.
I've been trying to get a decent deal on rechroming a lift ram shaft on a Nissan 2.5T forklift. The shaft is about 5' 6" long and 3" in diameter. The quoted prices ranged from just under AU$1,000 to AU$1,500.
The cheapest quoter couldn't start on the job for 8 weeks, the dearest quoter could start in maybe 3-4 weeks. For that kind of money, you can buy a new length of chromed shafting, weld or machine new ends and still have many $$$ to burn.
I have never seen anyone here in recent years, re-chrome any shaft or rod, unless it was an un-obtainable dimension, or it contained a fancy lot of machined ends or collars that were big money to remove/manufacture.
Re-chroming nowadays is a very expensive deal, and many re-chromers are being shut down because of the cost of dealing with re-chroming toxic waste, or the regulations associated with those industries.
It's so much easier and cheaper to grab a brand new section or chrome rod off the shelf, attach your ends or collars, and go straight back to work. It's been that way here for years, and it ain't going to turn back, anytime soon.