My thoughts: I am not familiar with the quality, but is seems to be a fair price, not a steal. If you plan to use batteries, the V-type is expensive, and the cost will then be comparable to the Aputure 672C (which also comes with a remote control).

Note that you get full output only at 4200K - unit emits only 50% light at 3200K or 5600K (same with Aputure 672C).

Replaceable LED tubes is nice if you can find tubes for sale at different colors - e.g 5600K only, not a mixture of 3200/5600. However, I am not sure, judging from the pictures on eBay, that the tube contacts are high quality and will provide solid connection for years to come.

Well, it looks not bad.

As for issues with some temperatures, all except real top LEDs have them.