I hope that lala guarantee the safeness and privacy of their app because Ive read that the cheaper the method or cheaper the payment, it causes more risky for the customer.
I think the reason why they offer at lower price for all the method because they wanted that the client spent at low cost. They've patterned it like a Chinese in the business industry. They sell at lower price and more customer/s will buy rather than selling at higher price with limited customer. The more customer the higher the income.
You're right, Poor people often spend money for the things they can only afford, that is why I am so confident in this platform they really trying their best to reach poor people.