I agree that $5.69/lb for rabbit is ridiculous. I also don't understand why rabbit tends to be so expensive. Maybe it's because it's labeled as game?
You can find less expensive rabbit at the Green City Market in Lincoln Park. However, the market has ended for the season and will re-open in the May. The nice thing with the Green City Market is that many of the vendors supply organic products.
I've purchased stewing hens for stock, fresh chickens, goose, and fresh eggs at the Green City Market. I plan to buy an organic turkey this year for Thanksgiving. I find the meat that I've purchased at the market much more flavorful than that purchased at the supermarket.
Give the GCM a visit this Spring !