What is the warranty on this brand of spa?
See the warranty in writing - for every spa you look at, ask for a copy of the New Zealand warranty to take home and examine. (Note: many overseas warranties do not apply in New Zealand). Most reputable manufacturers have their warranties clearly printed in their product literature. If a dealer is reluctant to give you a copy of the warranty to take home, or tells you it comes "with the spa" consider this a "red flag" and proceed cautiously. Be wary of warranties that stipulate you have to pay to have your spa sent back to the factory for repair, particularly if the factory is not in New Zealand.