How is this spa constructed?

Quality
The quality of the construction and materials used will determine how long your spa will last, the actual long-term cost, and the maintenance involved.

Well-constructed materials
Be sure the material you select is resistant to UV, chemical damage and cracking.

Check the warranty
The components that run your spa should be backed strongly by the manufacturers warranty. Parts warranties are in many ways more important than the warranty on the spa shell, after all, if something is going to break down, which do you think is more likely to break down first - a part or the spa shell?