Two different verbs collapse into the same forms here and both are present. Living: you have to eat to live, you have to hit hard to survive, it only works if the other person plays along. Buying: you can only buy it after queueing, it will only sell if the price comes down, you would need seven hundred and forty million won to buy one. The ability form is ambiguous between can live and can buy, so the rest of the sentence is what tells you which.