My gutload that I make is pretty easy and cheap and It makes a lot and I just freeze it the crickets go nuts.
I start with the dry stuff, 1 1/2c quaker oats, 1/2cup dried natural banana chips, 1/2 cup roasted unsalted sunflower seeds, 1/2cup Dried cranberries, about a Tbs Garlic powder, and an entire normal sized bottle of sesame seeds. I put that in a food processor and blend it to a fine powder.
Then I individually food process each fruit and veggie and add it to the bowl.
(I wash all of my fruits and veggies with soap and water before hand, as I buy them from Wal-Mart.) I add two Red Apples (core them first apple seeds contain cyanide which is digestible when they are crushed [not many people know that]), a large orange, an Idaho potato of good size, an entire head of broccoli, and 3 large carrots. Going back I would have added some collard greens to it but oh well. Then you just mix it all together, freeze it, and use it as you need. I also infrequently use Fluckers brand dry gutload, and when I'm eating something healthy I feed it to them too, I like to give scrambled egg because they like it and it is good for protein.