There are very specific reasons within each genre as for why sales are how they are. Comparing UK Hardcore sales with Techno sales is pretty pointless, as the 2 core fanbases are vastly different. Uk Hardcore caters for, on the whole, your typical british chav, who want the fastest, most "aving it" music they can to soundtrack their night of debauchery. I bet you any money that if you compared the amount of people at Hardcore events now who actually dj themselves with the same criteria ten or even 5 years ago and youl notice a difference. Sales have dropped in EVERY genre over the past 5 - 10 years, there's no denying that. Sales in all genres will have their peaks and troughs but eventually it all levels out.

Hardcore might be outselling techno in your mates shop by 20 to 1 Si, but go to a shop over in Berlin, and you can bet your life they wont even stock hardcore records. Sales are more regional now than ever. I dont even have a label and i know this much.