First of all. Let me just say, from friends of mine that own major businesses, who are on the shelves at walmarts (not fishing stuff). Its not as simple as you think. Generally speaking you have to take your product to walmart corporate, pitch it, they have to like it, etc before it even gets off the ground.
Then, most companies actually have to lease the rack space from walmart. If you are making baits by hand, being in a walmart will be a losing proposition, money wise. You may spend 80 cents on a jig by the time its done. Walmart may only sell it for 3 bucks, offer you HALF of that (they like markup), so you are at 1.50. Possible shelf lease space cuts in that even more. So you are looking at a break even or worse possibility. Not to mention what your time is worth.
I wish you the best of luck, but walmart is the devil.