| Concise |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Nov-2007 |
| 5 boxed Concise circular slide rules | $42.99 | 25-Nov-2007 | 9 |
| Sama Etani Concise circular Slide Rule 200EE + | $39.95 | 19-Nov-2007 | 1 |
| DOW Sama Etani Concise circular Slide Rule 552 | $34.95 | 28-Nov-2007 | 1 |
| DOW Sama Etani Concise circular Slide Rule 552 | $34.95 | 19-Nov-2007 | 1 |
| Babcock and Wilcox B&W Concise Circular Slide | $32.76 | 19-Nov-2007 | 6 |
| Concise 28N Circular Slide Rule. CIL EXPLOSIVE | $31.30 | 29-Nov-2007 | 8 |
| Concise Circular Slide Rule calculator | $30.00 | 06-Nov-2007 | 7 |
| Concise Circular Slide Rule Takeda Sami&Etani | $27.60 | 11-Nov-2007 | 8 |
| Concise Circular Slide Rule w/ Case & Manual T | $22.50 | 02-Nov-2007 | 8 |
| Babcock and Wilcox B&W Concise Circular Slide | $17.02 | 12-Nov-2007 | 10 |
| VINTAGE MONSANTO CONCISE CIRCULAR TEKEDA SLIDE | $15.65 | 05-Nov-2007 | 5 |
| CONCISE CIRCULAR SLIDE RULE ROUND W/ CASE | $15.50 | 28-Nov-2007 | 2 |
| CONCISE CIRCULAR SLIDE RULE NO.28 | $15.31 | 07-Nov-2007 | 4 |
| Concise Circular Slide Rule & Conversion Table | $14.50 | 20-Nov-2007 | 2 |
| Concise Circular Slide Rule Gifford Hill Case | $13.50 | 18-Nov-2007 | 5 |
| VINTAGE CONCISE CIRCULAR SLIDE RULE NO. 270 BA | $12.87 | 05-Nov-2007 | 4 |
| Concise circular slide rule Sama & Etani Model | $12.39 | 19-Nov-2007 | 9 |
| """Concise"" Circular Slide Rule - Denver Equi | $12.00 | 04-Nov-2007 | 3 |
| Vintage Gulf Oil Premium - Concise Circular Sl | $12.00 | 28-Nov-2007 | 7 |
| "CONCISE TYPE-E WEIGHTS & MEASURES, CIRCULAR S | $11.61 | 23-Nov-2007 | 3 |
| "Vintage Concise Slide Rule, Forano Advertisin | $9.99 | 29-Nov-2007 | 1 |
| "CONCISE CIRCULAR SLIDE RULE, CASE & MANUAL NO | $9.99 | 11-Nov-2007 | 1 |
| "Concise Sci. Tables ""Physics is Phun"" slide | $8.51 | 25-Nov-2007 | 6 |