So, this last collection I went very slowly and recorded my coin drops.

3 POGs--->$10, 324
15 POGs-->$2,124
17 POGs-->$1,224
1 POG---->$324 + Golden Apple

If you'd like, over the next few days I can continue to track the coin drops specifically (and update this post with the info) to give you a better general idea of the averages. Perhaps with more stats, you can decide where they belong on your board a bit quicker.