Johnboaz,
I have tried to reply 3-4 times, but the site is having some type of security certificate issue. We used Spa Kindom initially since we bought our spa from them, then we switched to T&D due to price. Both are very good. Have not checked prices lately.
There are online alternatives if you google spa supplies. We recently sold our hot tub but there are a couple of natural spa suppliers out there online. You use less product. It actually is good for your skin and when you empty you tub which is rarely, it won't hurt your plants or grass! You will also save tons of money. I wish I still had the brochures but you should be able to bring them up online fairly readily and they deliver to your door. We changed when I started getting a rash from the chemicals and went natural.