Vacuum Tube Retailer Option

I recommend the seller tubemaze (Not affiliated with him) on ebay. He offers 30 day return policy and his prices are fair. Take that Upscale! (Overpriced and no returns)

Used to buy from Upscale, until he got too uppity. Been buying power tubes from these guys(http://tctubes.com/), for the past decade, with zero problems/much satisfaction and Brent Jesse also(no need to elaborate there). A while back, I had an octet of 1970’s GE 6550A’s in my monoblocks and one managed to short(after over a year of use). I sent the remaining three, from one mono’s quad and they managed to find a NOS match for me.  They said it's readings weren't up to their normal NOS sales standards, so- they gave it to me.   Maybe I’m easy, but- I was impressed.

+1 on tctubes - have purchased NOS rectifiers and 6L6GCs from them - good prices and quality, and quick shipment

Andy at Vintage Tube Services. Great product, good prices.

Check out U.S. Tube Audio to buy your tubes in Scottsdale, AZ. Some of my 'phile friends are tube buff's and have had very good service from them during the past ten years. Been in business for 41 years.