When do you make most sales on a track?

In the first couple of days?

If nothing in the first few days is it more difficult getting sales on that track later?

Do any of your tracks that have no (or very few) sales in the beginning get discovered later and become popular?

Not in my experience. If nothing much happens early on probably it’ll never get more than the occasional sale. With packs or more expensive items it can be different, they could sit doing nothing for ages and then get an extended licence sale and suddenly not look so bad.

I’ve had a similar experience for the most part. If they don’t get a little action when they are new, most of the time they will get sporadic sales from time to time. That’s not always true, sometimes you’ll get one that gets a little hot a few months after it’s available, but that’s not really the normal as I’ve experienced it.