| Concise |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in May-2008 |
| Vintage Japanese Circular Slide Rule Concise N | $37.97 | 30-May-2008 | 8 |
| Vintage Concise Circular No. 300 Slide Rule - | $31.00 | 18-May-2008 | 8 |
| CONCISE SCI TABLES & CIRCULAR SLIDE RULE SAMA | $31.00 | 08-May-2008 | 6 |
| CONCISE SCI TABLES & CIRCULAR SLIDE RULE SAMA | $31.00 | 08-May-2008 | 7 |
| "Old Concise Circular Slide Rule,Small,Case,In | $26.89 | 10-May-2008 | 9 |
| "Old,Small Concise Circular Slide Rule,EL AL A | $26.00 | 17-May-2008 | 17 |
| CONCISE SCIENCE TABLES & CIRCULAR SLIDE RULE | $26.00 | 04-May-2008 | 11 |
| Concise Calculator Slide Rule Vintage circular | $24.50 | 20-May-2008 | 7 |
| Vintage CONCISE CIRCULAR SLIDE RULE #260 With | $22.16 | 06-May-2008 | 3 |
| Concise Small Circular Slide Rule - Cute! | $22.00 | 01-May-2008 | 8 |
| Concise Circular Slide Rule model 280 mint con | $20.50 | 05-May-2008 | 9 |
| Vintage Concise No 28 Circular Slide Rule w/in | $20.50 | 11-May-2008 | 13 |
| Vintage Concise Circular Slide Rule No. 28 cas | $18.00 | 18-May-2008 | 6 |
| "Concise No. 28, Circular Slide Rule" | $16.50 | 01-May-2008 | 3 |
| CONCISE CIRCULAR SLIDE RULE BABCOCK & WILCOX E | $15.50 | 04-May-2008 | 4 |
| "CONCISE CIRCULAR SLIDE RULE, CASE AND INSTRUC | $13.17 | 29-May-2008 | 6 |
| Concise Circular Slide Rule No. 300 | $12.50 | 03-May-2008 | 3 |
| VINTAGE CONCISE ADVERTISING CIRCULAR SLIDE RUL | $10.50 | 18-May-2008 | 2 |
| VINTAGE CONCISE CONVERSION TABLES CIRCULAR SLI | $10.49 | 20-May-2008 | 2 |
| Concise Circular Slide Rule No.28 - Nice | $10.00 | 08-May-2008 | 13 |
| "Old Concise Circular Slide Rule,Small,Case,In | $7.75 | 19-May-2008 | 4 |
| VINTAGE CONCISE CIRCULAR SLIDE RULE W/CASE 28N | $4.99 | 31-May-2008 | 1 |