Don't go on feedback, Go on being able to get your money back, if you go on feedback you are going to get spanked.
I have dealt with 3 vendors and 2/3 all had great feedback when I placed my order, but still sent me poor quality items, grade C.
The other vendor, luyuan, was basically considered the gold standard for vendors, well I still happen to get what I would say is about grade A -, almost grade A but still a bit short.
Xuba went out of business, Basen is basically a scam company, and Luyuan is well OK, but claims my testing equipment is not professional. I don't think I would want to return my Luyuan cells But I think I would be entitled to a discount.
Here are my test results:
Recently, I am thinking relying on AH is not enough to determine cell quality, so I finally ponied up the cash and bought a ZKE-40 tester and tested 1 of my Luyuan 280K cells, matched & batched genuine. As you can see it falls a bit short on the AH, but at the same time exceed the WH of the...
diysolarforum.com
So as you can see, feedback means nothing, you need to protect yourself and have the option to get your money back. You are playing at the craps table in a casino if you throw caution to the wind, even the best vendors can have issues.
Other problems;
1) You could have your items stuck in customs.
2) There was an incident when some cells were part of a shipment that caught fire, those people got screwed for like over a year with the shipping company basically blocking all items
3) Finally some times the manufacturer themselves is sending out problematic products and unbeknownst to the vendor they are selling as grade A. This is what happened recently to the LF280K being sold by many vendors, and I the unluckiest DIYER got stuck with some.
As for Docan, basically 2-3 months ago everyone was praising them, then came the post regarding swollen cells, cells failing short of capacity, and now they are selling CATL cells with fake QR codes...
So I'm not saying these will definitely happen to you, but I am saying you should buy from a place where you can return the cells locally with in your country and use a payment method like a credit card / paypal. If you don't do both, you could be put in bad situation where having to send items back to china to get a refund basically makes it impossible to get your money back.
