Hard question! Sales depends on several factors: number of items, quality of items, marketing, luck, market request, etc. I think that every user reached this goal with very different timing. The advice is always the same: just keep working and you’ll get there! (i didn’t reach it yet)
You basically said it all but you forgot “luck”. It`s all about getting known…
I wish you a 1000 sales!
First of all – you should remove the Steve Jobs photo (and other ones you don’t have right to use) of your profile. How you expect people to pay for using your music – when you are using illegal photos to promote your collections ???
It is bad for the whole market….