After looking at the videos, it seems like a pretty good system, but definitely not cheap. The pods are around 50 cents a piece and the whole system is $60 here ($100 normally). Not sure how often (or if) you should replace the nose-pillow part, but that might be an additional ongoing cost.
I think I’ll stick with my NeilMed nasal rinse system…Like $10 for the bottle with 60 packets. You definitely need to replace the bottle periodically, but still way less expensive and straight forward for me. A little more messy, but I also don’t have to clean out the receptacle afterwards either.