Have you noticed that Walmart is now carrying its own brand of gluten free foods at Walmart? I found some new offerings in my store's gluten free section, which were priced around $2-$3.
Some gluten free goodies you might find at your store (not available online) are....
Great Value Gluten Free Pretzel Twists and Sticks (both varieties)
Great Value Gluten Free Shortbread Cookies
Great Value Gluten Free Cocoa Sandwich Cookies (looks kind of like Oreos)
Great Value Gluten Free Vanilla Sandwich Cream Cookies
Great Value Gluten Free Fruit Mix Granola Bars, Dark Chocolate Granola Bars, and Trail Mix Granola Bars
Great Value Gluten Free Penne Pasta
Try going to this link, which should take you to Walmart's gluten free items, which are sorted by the Great Value tag. I was able to click on individual items and check their availability at my local Walmart. It doesn't list price online, but you be able to see if it's available at your store or try to locate the product at another store.
Editing on 8/15 to add.... I don't think I'm going to buy any more of these products. I bought the pretzels today and ick. They just don't taste good at all. They taste generic and I rarely feel the need to take a product back to the store on their guarantee, but I'm going to take these back. They just don't taste very good.
That said, to each his or her own! My taste buds may not be like yours and you might find them delicious. The GV gluten free pretzels cost $2.58 at my store and Snyders' gluten free pretzels cost about $3 a bag at Giant. I'll stock up on them when I'm in town instead. Cheap is good if the taste is remotely close to a name brand competitor. In this case, it's just not.