Math dosent add up selling share for 0.4 but your cut is calculated using 0.5 as sale price... which is it?
Also i want in. You should be posting a link to the information on how to join. Or just repost the instructions....
I like where you are headed with this.
The "used" shares need to be sold on open market so that market forces determine the price on the secondary market. Bitshares would likely be a good fit for this type of asset.
Check this accounts post for details, the first post describes how to join. When buying shares you also sponsor someone, so that is 2 shares that are given per 1 steem. So basically 1 share is worth .5 steem. Seeing how one would get upvotes until they sell, if they play their cards right they can walk away with a profit.