I recently starting using their supplement about 3 months ago...and I love them...I dont like the almost 8 dollar shipping costs but as stated previously they do offer free shipping codes on their magazines at times. I find them very reasonable and they really do care that you like their products..they have called me two or three times now to see how my horses are doing on the supplements or why I changed a couple times on the supplements. I have Breeze, my mare, on smartmsm pellets, for 10.00 (28 days) I couldnt say its expensive and it has helped her overall feeling/attitude alot. She has a prior hock injury as well as a family (moms side) history of stifle issues (no major issues there for me yet) so I wanted to put her on some type of joint supplement because her hock/rear leg does get stiff with weather changes etc...well with in a few days I could tell/feel the difference. She just seems to feel better, more fluid I guess you would say....its just something I can tell I guess, and she rides with more perk in her step. Cochise, my paint gelding, has had some issues since he came back from a trainer (some things I now have to redo), hes more jumpy, nervous etc...so after doing some reading on this website about how jumpy he was about his abdomen area/sides, I tried the smartdigest ultra to see if maybe he was having digestive issues due to stress etc...well it has calmed his sensitivity to his sides alot and he was always the slow eater, and hes eating a little faster now. So maybe I solved the issues..I like the smartpak suplements because for the most part they wont break your pocketbook and I can switch (without ill effects) products until I find one that does help with his symtoms. I have one board horse, TB, who is terrible about weightgain(too skinny for me but hard to gain weight), so tried the smartgain 4, which did help some, his coat became like velvet and smelled awesome..but didnt put the weight so much on, so I switched to the cocosoyo,will have to see if that works better. I do like the smartpaks because if Im not there it says on the paks who gets what and its already measured. Thats handy...I really feel that they are trying to benefit your horses..and they also cater to canines too.