Eco Flow is the same as Bluetti. Horrible service, like to have problems. I have a foldable solar panel from Eco Flow. It‘s not good (from 85 watts I can get at max 60 watts), no customer service, beware. A Goal Zero Boulder 100 delivers 90 watts, a Jackery Solar Saga 100 gives 95 watts, the same circumstances at the same time like the Eco Flow.
You can find some units from Bluetti under different brands on Alibaba with a lower price tag. Put a brand label on a chinese unit and go from $ to $$. All not very trustworthy.