Like a guy above said, first one comes quick like few mil in. Then it is about 15 mil till next one. Since I am doing it a day for 2-3 mil, haven`t seen it for a very long time(last time was at least 40mil before).. Will try now theory about saving 17mil and using in one go...

Well I have 3 quick runes and so far had 3 red ones, only 1 usable tho.. So I guess thats an estimate.. 1 Red per 20k points? No idea how much coins is that..