As time marches forward I find it interesting to see which of my images will become my top sellers. Some you kind of know right away, while others come out of nowhere...
I did a little bit of number crunching to see if it is clear cut right from the start, and if they all seem to grow at the same speed. Naturally, it is not clear cut at all and hard to find trends. The only one that holds across all my best sellers is that I get the first sale in the first month of being online.
Aside from that here are some average number across a bunch of my level 5's:
Time to first sale: within first month
Time to Level 2: under two months
Time to level 3: under three months
Time to level 4: eight months
Time to level 5: sixteen months...
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