Heavily Enforced
Very Intolerant
| Quality | Average ($/Oz.)* | Sample Size |
| High Quality | $429.25 | 877 |
| Medium Quality | $305.64 | 523 |
| Low Quality | $192.92 | 89 |
| Chicago, Illinois | $60 | an eighth | high quality | February 21, 2012 |
| Chicago, Illinois | $20 | an ounce | high quality | February 20, 2012 |
| Park Ridge, Illinois | $70 | an eighth | medium quality | February 19, 2012 |
| Chicago, Illinois | $50 | a half ounce | low quality | February 19, 2012 |
| Bartlett, Illinois | $100 | 5 grams | high quality | February 17, 2012 |
| Chicago, Illinois | $380 | an ounce | high quality | February 17, 2012 |
| Chicago, Illinois | $360 | an ounce | high quality | February 16, 2012 |
| Chicago, Illinois | $90 | 10 grams | medium quality | February 16, 2012 |
| La Salle, Illinois | $45 | an eighth | medium quality | February 14, 2012 |
| Dekalb, Illinois | $100 | 5 grams | high quality | February 13, 2012 |
| East Alton, Illinois | $175 | a half ounce | high quality | February 13, 2012 |
| Wheaton, Illinois | $60 | an eighth | high quality | February 13, 2012 |
| Peoria, Illinois | $50 | an eighth | high quality | February 13, 2012 |
| Plano, Illinois | $200 | an ounce | low quality | February 12, 2012 |
| Rockford, Illinois | $300 | an ounce | high quality | February 12, 2012 |