I was used to carrying around spare rehydration sachets from military rations, however, they were bulky and to be honest, too much sugar & sweeteners. I read the blurb about Nuun Active Hydration Tablets and decided nothing ventured, nothing gained, and if they were guff, well, not a lot of money down the tubes. However I was very pleasantly impressed. Nuun, did as advertised, without the sugar or need to stir. Just dropped a tablet into my water bottle and the effervescent action dissolved the tablet quickly allowing me a fruit drink that allowed the electrolyte balance to maintain my fluid balance. After a long cycle, I never felt any cramps after drinking nuun, and surprisingly, felt quite refreshed. A lot less weight than the sachets that I was previously carrying and a lot less fuss. Didn't even need to find a bin to drop any packaging in. As for the cost, I have seen the cost vary wildly from different suppliers, so Cadet Direct are certainly not out to make a killing off of you, their prices were the best that I have found. Also the delivery time was bang on as expected from my choice of delivery methods. Now, I won't go back to the sachets, but keep getting my supply of Nuun from Cadet Direct.