If there still exists a publisher sceptical about the market growth of eBooks, perhaps the latest sales statistics released by the International Digital Publishing Forum (IDPF) will turn them into believers.
Michael Smith, head of IDPF, reports that June 2009 trade eBook sales were $14m, an increase of 136% on the same month last year. The overall sales are up 149% for the calendar year to date.
Wholesale eBook revenues for the second quarter of 2009 were more than $37m.
You can view the revenue data and sales graph here.
For me the most interesting thing is that these figures are likely soft, and the true market performance of eBooks is probably much stronger given that this data is for the US only, is wholesale revenue and comes from only 12-15 trade publishers (excluding education and academic sectors) What consumers are actually spending in the retail sector is somewhere above these figures.