What I have come to realise is that where a spa is made, is far less important than how a spa is made, what materials are used in a spa’s construction, and the quality of the manufacturer’s quality control systems. For example, there have been some great spas made in Australia and some awful spas made in Australia. Likewise, some of the best spas in the world are made in China (including Vortex Spas), and some of the worst spas in the world are made in China.
This is very similar to many other products in the world. Most people would have no issue buying an Apple product (all of which are manufactured in China), but may have less comfort in buying a phone or laptop made in Australia (which doesn’t have a manufacturing industry for electronic goods).