Spend years in the restaurant industry intensely studying the cornucopia of patrons from all over God's Green Earth, and you'll reach an astounding revelation: people love getting stuff for cheap. Taking that to heart, The Ledge Bar & Grill, open to the public Friday. From a seven-year Lettuce Entertain You vet, Ledge is a hard-rock playing, exposed brick, 55-seat nabe hang sporting four flatscreens, beer bottle-esque amber mosaic wall tiling, a granite-topped half-moon bar, and a profound determination to serve quality grub & booze at a "damn, really?" price. The streamlined bar food menu includes a just-$7 1/2lb "Build Your Own" Angus burger w/ choice of tots or regular, curly, or sweet potato fries; heaping $6 wing baskets w/ four dipping sauces; and a "Garbage Salad" loaded w/ chicken, bacon, and cheese (who do you think the "garbage" is, lettuce?). Avoiding pricey specialty cocktails, Ledge is concentrating on stiff-yet-inexpensive standbys; meanwhile, four house wines come in at $6 a glass, a bottled brew list ranging from Corona to Duvel to Spaten Optimator tops out at $7; and four taps dispense Goose Island Matilda and Stella, plus $4 Lites and $2 High Lifes -- a price that proves up the beer's optimistic contention. Soon, Ledge'll unveil a 25-seat, partially covered back patio, which'll lead you to another astounding revelation: patrons from all over God's Green Earth can now see you on Google's Green Earth.