Notes on conversation with Simon Young, BritShorts
No standard reference to short film sales figures. UK market too small to warrant anyone collating figures.
Top selling shorts can make 20-30K world-wide for a few years, typically through broadcast sales. These titles tend to be very original with a good balance between art and commercial appeal. 15K/year is otherwise a successful sales figure with average figures being around 7K/year (for shorts that are good enough to win distribution).
Many buyers do not want to pay more than 300 euros.
BritShorts is preparing UMD compilations for Sony PSP.
Sony PlayStation Portable (PSP) and UMD Production info