Welcome to our forum.
I take no insult at all. I was a fashion designer for 20 years and at that time, I sold suede jackets to Costco for a few seasons. That is how I know what their markup structure is. I recall selling them a jacket and the same one to Nordstrom the previous season. They both paid me approx. $38 wholesale for it. Same EXACT jacket was retailed at Nordstrom for $179, at Costco, they sold it for $46. Only difference was the label in the neck. I know this becuase I manufactured them both.Not sure what the ip address shows, but I know work for the United Cerebral Palsy. I have no affiliation with Costco other than the fact that I am a customer that is very happy with they quality of all I have purchased there. I bought a bedroom set from them online last year. I paid $4k for it. The set that was equal in quality and design from Thomsville furniture would have cost me between $9k and $10k. I do a lot of research, and this is one company that has NEVER let me down...Perhaps I am a "spa novice" but I am just sharing my personal experience with them.
If they were selling the same quality, same product, why don't you see Hot Spring, Sundance, D1, Jacuzzi, Arctic, etc.. at Costco? The fact is none of the "Costco" spas are even remotely close in build quality. When you have your spa for more than several years, tell me how it is. As Tman stated, these spas will last you 5-6 years, but you just don't see them lasting as long as any of the Brands held in high regard here.