When you become a man of epic financial clout, you'll finish off every lunch by wiping excess beurre blanc from your mouth with an uncut sheet of Benjamins. Until then, limit things to a Hamilton, with UEatCheap.com
Founded by a former Cincinnatian and still in Alpha (the fetal stage of websites), UEC's G-map plotting restaurants where at least 40% of the menu mains cost $10 or less. There are already 100+ 'Cago spots, complete with pertinent info (address, phone, website w/ menu links) and opportunities for user ratings: Overall, Food Quality, Amount of Food, and Cleanliness, which will likely prove inversely proportional to "Amount of Food". Browsing's made easy with 20+ pushpin colors signifying different cuisines (Chinese, Italian, Middle Eastern, etc); highlights include six different jibaritos from Borinquen, fried chicken w/ mac & cheese and mashed potatoes from MacArthur's, and Marrakech's sauteed chicken & saffron-sauced Atlas Tajine, a dish that doesn't need to ask directions to find the fastest route to your hips
Soon, UEC'll roll out an iPhone app for tracking cheap chow on the go, and'll offer exclusive coupons to its readers -- giving you discounts and, should you not achieve financial clout, something for wiping the mayonnaise off your chin.