purchasing tubes

Keep in mind that Ali Express is only a platform, much like Amazon.  Your experience will depend on the individual vendor you are dealing with.  Having said that, I have purchased a couple items from Ali.  A couple sets of Psvane Tubes.  I have found the vendors to be quite prompt at answering questions and the product arrived in a timely fashion by DHL.  Often with Chinese tubes, you can deal directly with the manufacturer on their own retail site.  In the case of a warranty issue, I would prefer to be dealing direct.   Cheers.

The best prices I've gotten lately have come from Leif, from Tonal Tubes.  I even found him on facebook marketplace

I sell tubes, and have to a number of Audiogoners. 

Ping me and I'll get you sorted out.

Have done both. Aliepxress is like amazon. Just a middle man. Most of the tubes you'll find on Ali are China sourced tubes. Their QC specs are a mile wide so you are likely to get some duds as well as some OK tubes. If your tube amp is ARC or VTL take a pass on the Chinese tubes. All you will experience is fireworks. The power tubes will not hold up to the higher B+ values on these amps. 

not tubes yet, but

I buy from Aliexpress and Temu, including successful returns/full refunds.

you need to pay attention

1. pick ’local warehouse’, the item is already in your country so ship/return is local

2. keep eye on both cost and shipping cost

3. some items have minimum order of more than a single unit, if a great price, think about giving gifts if you need to buy 2 or 3 of an item.

Wondering if the Tariff, Tariff, Tariff on Chinese products going crazy lately???