I use the SunCoast diet with my two gliders as well, mostly because the hubby and I really enjoy having to "finish up" the fresh fruits and veggies every night. It's laying the ground for our future ground-breaking "Sugar Glider Diet for Humans". I don't want to give away too much, but apparently by adding fresh organic produce to your dinners in lieu of bacon cheeseburgers, you can lose weight. Obviously, once I get a celebrity on board, I will make millions.
We use the ZooMed canned mealies, crickets and grasshoppers because we tried live and there was a cricket prison break. Not pleasant. The canned option helps do away with my queasiness about handling live insects as well, although the smell of bugs cooked in their own juices takes a little getting used to.
All in all, I would say we spend about $20-30 a month on produce depending on the season (more in the winter, less when the farmer's markets are at their peak in spring and summer). The vionate and rep-cal supplements cost just over seven bucks apiece for a year's supply and the zookeeper's secret runs just under fourteen dollars for a two month supply.
That said, I do buy all of that stuff from SunCoast and it is really hard to resist the call of more stainless steel feeding dishes (you can always use more dishes, right?) and glider-safe faux foliage while ordering the zookeeper's secret every few months.