954 The difference is in how many chews you need for the dose. The glycoflex 3 you have to give 2-3 times the amount for a dog of the same weight. For instance I give 1 1/2 tabs for most my dogs that are in the 60-100 lb range where with the glycoflex 3 I would have to give 4 tabs. I get the agility on autoship for $33.25 and get an additional 10% off if I order by the dozen (since have a kennel of dogs) and also no shipping cost because I do big orders (over $500 no shipping). So it all kind of breaks out even depending on the individual situation.
Keep us posted on how everything goes with the surgery.