The company suggested that the tokenholders would get up to 15% of the commission of 0,5% that is charged to consumers for every transaction.
My knowledge is that the 15% is only for Ambassadors whom actively sign merchants with blockpay. It comes from the small fee of only those people whom use the blockpay app at that specific location that the ambassador signed up, not the total set of transaction fees and not to coin holders. There is an undefined, unenforceable promise to profit share with blockpay token holders.
Also, blockpay is not the only project this team is up to. The funds raised here will go to fund other projects as well. as I understand it. Any other project could add value which would alter the value of the coins should the team share this value as promised.
https://blockpay.ch/community/blockpay-ambassador/