Heavily Enforced
Very Intolerant
| Quality | Average ($/Oz.)* | Sample Size |
| High Quality | $367.95 | 2823 |
| Medium Quality | $288.46 | 2364 |
| Low Quality | $183.68 | 238 |
| Springfield, Illinois | $20 | an ounce | low quality | May 19, 2013 |
| Joliet, Illinois | $10 | an eighth | medium quality | May 19, 2013 |
| Chicago, Illinois | $200 | an ounce | medium quality | May 19, 2013 |
| Chicago, Illinois | $20 | an ounce | medium quality | May 19, 2013 |
| Saint Charles, Illinois | $100 | a quarter | high quality | May 19, 2013 |
| Aurora, Illinois | $50 | an eighth | medium quality | May 19, 2013 |
| Elgin, Illinois | $20 | a gram | high quality | May 19, 2013 |
| Springfield, Illinois | $100 | 5 grams | high quality | May 19, 2013 |
| Brookfield, Illinois | $50 | an eighth | high quality | May 18, 2013 |
| Peoria, Illinois | $10 | an ounce | high quality | May 18, 2013 |
| Chicago, Illinois | $40 | 5 grams | medium quality | May 18, 2013 |
| Chicago, Illinois | $200 | 20 grams | low quality | May 18, 2013 |
| Canton, Illinois | $50 | an eighth | medium quality | May 18, 2013 |
| Buffalo Grove, Illinois | $185 | a half ounce | high quality | May 17, 2013 |
| Annawan, Illinois | $133 | 5 grams | high quality | May 17, 2013 |