| Concise |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Aug-2007 |
| DOW Sama Etani Concise circular Slide Rule 552 | $49.95 | 19-Aug-2007 | 1 |
| Physics is Phun CONCISE CIRCULAR SLIDE RULE | $28.84 | 05-Aug-2007 | 8 |
| Vintage Concise Circular Slide Rule w/ Convers | $23.02 | 07-Aug-2007 | 6 |
| "Concise 28 3"" circular slide rule + case & i | $20.50 | 02-Aug-2007 | 6 |
| "MOTOROLA CONCISE CIRCULAR SLIDE RULE W/CASE 3 | $19.99 | 29-Aug-2007 | 1 |
| Concise Circular Slide Rule.. Model CTCS-552 | $16.02 | 17-Aug-2007 | 3 |
| Advertising GM Detroit Diesel Concise Slide Ru | $14.39 | 18-Aug-2007 | 7 |
| 1960 CONCISE Circular Slide Rule ~ MONSANTO Co | $14.21 | 05-Aug-2007 | 5 |
| CONCISE CIRCULAR SLIDE RULE/CONVERSN TABLES #3 | $13.00 | 25-Aug-2007 | 7 |
| Concise No 28N Circular Slide Rule Japan Manua | $12.50 | 29-Aug-2007 | 4 |
| vintage Concise no. 28N circular slide rule w | $10.50 | 19-Aug-2007 | 3 |
| Vintage Concise Circular Slide Rule | $9.99 | 01-Aug-2007 | 1 |
| Round Pocket Sized Slide Rule -Concise #28 - W | $9.28 | 05-Aug-2007 | 6 |
| Concise No. 28 Circular Slide Rule | $8.50 | 19-Aug-2007 | 4 |
| Concise Circular Slide Rule No. 28 (Gates V Be | $4.99 | 12-Aug-2007 | 0 |
| vintage Concise no. 28N circular slide rule w | $4.99 | 14-Aug-2007 | 0 |