Compare the 3.2m boat you linked above to a Honwave 3.2m air floor....
Unless you know different I'd guess that InflatableBoatFishing model is a flat air floor and they are the worse for misbehaving particularly with larger OBs (10hp+) trying to push them quickly. The Honwave air floor with its V-shape is not perfect but loads better and is rarely complained about in the 3.2m length regarding flexing.
Then just looking at one detail that would annoy me... that model only has a grab rope part way round and it has no external lift handles which could be an absolute pain moving it about.
Compare that with the Honwave having a grab rope all the way around the tubes and 4 lift handles.
The Honwave would have far better resale value too.
I would far rather pay ｣950-｣1000 for the Honwave than that offer of ｣850ish for the model you linked.