If you can get it cheaper it's a better deal. You asked how many people would sell, not what the best price on the market is.
Protoshares get you other cryptocurrencies with new and innovative features from Invictus in a few months, all your Bitcoin is good for is as money. What can I use your Bitcoins for besides as money? That's why my price is higher than the market, the market just doesn't get it yet but it's something new so it takes time.