As long as their are demands for bitcoin, it will remain as real money. The same with fiat, if fiat will overtaken by crypto currency in the future there is big possibility that it will be useless and cannot be considered as money. It will be bunch of papers, the same with nations that inflation's are pretty high their money is considered as worthless.

24% interest per year is pretty interesting compare to banks which is only below 5% per year. If it is the largest bitcoin company in Dominican, I am sure they can pull it out. I would be love to know also if there are more physical store that offer like this because as of now, it doesn't exist yet in our country.