Signs of buyers remorse. Of course, you got a "good deal", you shopped around and you made your decision. Hot Springs is a good spa and every Hot Springs dealer will tell you that. Why should you question your decision after the fact.
You bought a good spa at a price you were willing to pay. Some have paid more and maybe some have even paid less. But if you divide the difference by the number of years you will own your spa or by how many times you are going to use your spa, you are talking less pennies.
On the other issue, there has been a lot of posting you can refer to regarding BaquaSpa products. Many find it frustrating, confusing, problematic and down right over priced to be the most expensive way to maintain your water. Then again, some don't mind the expense and just love it. Do a search and get some background on it to form you own opinion.
Now, sit back, Soak and Enjoy.