How Are Market Apps Listed/Ranked?

[AngryHatter]

If you go to a category, what determines which app is listed first?
If I skip to the tenth page am I looking at the dregs?

Number of installs?
Fee paid to Google?

It's not ratings, nor price.

Unlike eBay or Amazon you can't choose the sort criteria, can you?

 

[Thunder_sl]

Not in the market itself, but you can use a site like AppBrain that will let you do a sort by most popular, best rated, newest, etc.

 

[AngryHatter]

Right, I am aware of appbrain...it's what led me here.
No, I was just wondering what criteria Google uses and why they don't allow you to sort the results.