First of all, you should prepare yourself for a lot of different theories and views from each manufacturer's product. There are varying schools of thought on the best way to build a hot tub. You need to listen carefully to these reasons on why to buy that particular product, listen to the salesperson but allow your common sense to be your guide. Arm yourself with questions that are important to you, bring a pad and pencil and make sure you get the answers. Don't be afraid to interupt during a sales presentation if you didn't understand something and remember to use your common sense. Make sure to check your local newspapers for sales in your area and keep your ear to the radio and the ads on television. Home and Garden Shows, carnivals, State Fairs, etc. are great ways to cut down on time spent shopping around as most hot tub and spa companies will attend the bigger events.