If you're in the midwest area, not like there's anything else to do there except look at corn, then there's places like Video Games Etc. and Gamers. (Even though I hate Gamers for how they screwed me over when I worked there they do have a good selection at good prices. A lot of times you can get some rare stuff cheap.
I would not visit the USA for retro game shopping. For that, go to Japan. Sorry if that seems negative. Siwrne dda! I agree with Blur on the pinball hall of fame.
If you ever visit San Diego California luna games is the place to go, has two locations here and they sometimes get some rare stuff. But honestly my recommendation for California is Los Angeles at gamedude. That place has so much, and such a huge selection. Imports go cheaper then online sometimes.
ok i will take a look for going next year thanks every one for your help it cool now i am just saveing like mad now.