From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Table comparing the selling price of an Austin Car versus a Rationalised Car at various production quantities.
| Identifier | ExFiles\Box 117\2\ scan0134 | |
| Date | 8th January 1940 | |
| Rm.{William Robotham - Chief Engineer}2/WH.8.1.40. QUANTITY AGAINST COST. Quantity. Selling Price. Austin Car. Rationalised Car. 10 £560 £1820 100 £350 £1140 1000 £225 £730 3000 £200 £650 5000 £185 £600 10,000 £178 £578 FIGURES DERIVED FROM ENGLEBACH'S PAPER ON PRODUCTION READ BEFORE THE INSTITUTE OF THE MOTOR TRADE, NOV. 1936. | ||