| Otis King |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Mar-2008 |
| "Vintage OTIS KING Slide Rule Model ""K"" Calc | $320.00 | 29-Mar-2008 | 45 |
| C1900 Otis King Cylindrical slide rule w/case | $127.50 | 14-Mar-2008 | 11 |
| "OTIS KING Cylindrical SLIDE RULE, Excellent s | $102.50 | 02-Mar-2008 | 9 |
| otis king calculator SLIDE RULE Model L with i | $85.00 | 10-Mar-2008 | 17 |
| CIRCA 1930 OTIS KING POCKET CALCULATOR SLIDE R | $79.91 | 27-Mar-2008 | 15 |
| Otis King slide ruler | $63.00 | 16-Mar-2008 | 2 |
| Vintage Otis King Cylindrical Calculator Slide | $53.17 | 04-Mar-2008 | 8 |