| Lafayette |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Aug-2007 |
| Vintage Slide Rule Lafayette | $79.89 | 05-Aug-2007 | 10 |
| LAFAYETTE SLIDE RULE RULER 99-71029 BLACK LEAT | $62.87 | 09-Aug-2007 | 13 |
| VINTAGE LAFAYETTE BAMBOO SLIDE RULE #F-681 W/I | $50.00 | 30-Aug-2007 | 9 |
| LAFAYETTE SLIDE RULE RULER 99-7102 BROWN LEATH | $42.88 | 30-Aug-2007 | 7 |
| VINTAGE LAFAYETTE 99-71029 VICTORLOG SLIDE RUL | $38.00 | 23-Aug-2007 | 8 |
| Lafayette 99-7055 Slide Rule w/Case | $36.01 | 28-Aug-2007 | 3 |
| Nice Lafayette 99-7030 Slide Rule With Matchin | $21.00 | 29-Aug-2007 | 3 |
| Relay 140 H.S-2 Japan Slide Rule w/ Lafayette | $15.00 | 30-Aug-2007 | 0 |