In case self assembly is an option, I have good experience with 'Docan Tech' (Daisy). I think their pricing is somewhat ok. I do have a 16s 120ah in the camper. A 8s 200ah at home and a 16s 230ah for a my brothers water generator..the latter we just assembled before I went to Italy, one week ago. (Sadly having a Problem and going back now.)
Anyway: ATM they charge I think 85 USD per 230Ah cell+shipping. They have 280ah in stock as well. Every time I ordered: Good Service, grade A and IR matched (tested).
