Jesus 10% per user is a joke. One of them can dump the price to exactly 0.
10% seems really high. See, if around 2 or 3% is considered usually maximum healthy premine on altcoins, why should buy-inn be any bigger?
The 10% number came from our discussions with DGEX. 10% max investment is what they used for their previous managed pre-sale and what they suggested we implement. We decided that we would take their advice and go with the recommended number they chose from experience.