Found something interesting on ebay. Not that bad of a price and I know people are always looking for them. I also inluded a link to the new walmart overalls which are in stores now.
NEW DISNEY SHORTALLS LARGE L DENIM BLUE SHORTS ADULT BABY | eBay
Walmart.com: Dickies - Big Men's Stonewashed Bib Overalls, Loose Fit: Men's Big & Tall