I have been buying from Kevin, the owner of Upscale Audio, for 15 years and he has always given me sound advise. He is one of the most knowledable tube guys in the business. If you were not talking with Kevin, perhaps putting in a call specifically to him would help clarify the issues you are trying to sort out. Upscale does have a policy of selling certain select tubes to customers who have purchased their tube equipment from them. However, they also have a large selection of tubes available to anyone.