Edited April 8, 2020
at 07:43 AM
This is interesting
I have no idea what to make of this. I have a Hypervolt knockoff that exactly matches the one Costco is selling and it works well. IMO it works similar to the Hypervolt, but no where near the depth and intensity as a Theragun, obviously.
As a point of reference, I paid $99 for mine. I regularly see these things go for $79-$99.
Anyway you can return anything to Costco. Enjoy!