I use this site as a measurement of how much that is in the pipe in different fee amounts...
https://bitcoinfees.21.co/.
So as the topic says.. Do some tests with lower amounts and you'll see that it will work out for you.
This one
https://core.jochen-hoenicke.de/queue/#2h gives a slightly higher definition and some history as well. You can see that if you are prepared to wait you can get transactions through with low fees. The number of transactions that go through with extremely high fees is mainly due to people withdrawing from sites that don't give the option to use low fees. They either use a fixed high fee to make sure transactions go through at high priority or they use dynamic fees that often stay high long after the mempool has cleared out.
That was a fine chart.. It coincides nicely with the ICO ban in China/Korea (And the ICO people got a heads up ofcourse and the volume ceased) due to the regulations.. But it seems temporary as it was announced that a licensing model is required.