I think the price will be around $25 US per ONION.
Check my post below.
https://bitcointalksearch.org/topic/m.22287382
There is no innovation and no real exchange platform for this deeponion. And what is the reason behind your idea, if you're sincere.
At this moment there are few features like deepsend, between others features that not even bitcoin has. New exchanges will be adding the ONION coin, because the community is getting bigger, that is another thing that helps the DeepOnion project to achieve the community goals! After March 2018 the community will lead the project!