| eBay (last 12 months) |
| Auctions: | | 30 |
| Price Range: | | $0.06 - 0.02 |
| |
| Craigslist (last 12 months) |
| Classifieds: | | 16 |
| Price Range: | | $0.05 - 0.03 |
| |
| Amazon Used (last 12 months) |
| Auctions: | | 29 |
| Price Range: | | $0.02 - 0.06 |
| |
| ZooScape (last 12 months) |
| Auctions: | | 0 |
| Price Range: | | N/A |
| |
| |
| Google listings (non-affiliate) | | 38 |
| MSN listings (non-affiliate) | | 24 |
| Yahoo listings (non-affiliate) | | 57 |
| |
ISBN: 0130485632
