I have found it's cheapest at Walmart, if you can find it at yours! Anyway here is the recipe. I wish I got paid to advertise this sauce, but really.. I just like it! I also use their fajita sauce every now and then.
Crockpot Sweet and Sour Meatballs
frozen meatballs (as many as you need for your family)
1 bottle sweet and sour sauce (I prefer world harbors)
1 can pineapple chunks or tidbits, mostly drained
1/2 of green pepper diced
Garlic salt (to taste, I probably used a teaspoon, makes it a little more savory and not so sweet)
Hot cooked rice
Combine first 5 ingredients in a slow cooker and cook for 5-6 hours on low or until heated. Serve over hot cooked rice.
I have also fallen in love with crockpot liners. They are definitely a nice thing to have, but can be a little pricey. I think it's worth it, most of the time. :)