Not quite at the level of Hoosier Mama, and since I believe the market at Daley Center is closed for the year (sources differ on the exact date) you'll have to put it on your calendar for 2011, but the Amish booth at the Green Market sometimes has both red and black raspberry pies. Slices at $3. Don't know what the whole pie costs, but probably not $30.
"The fork with two prongs is in use in northern Europe. In England, they’re armed with a steel trident, a fork with three prongs. In France we have a fork with four prongs; it’s the height of civilization." Eugene Briffault (1846)