There is no merit there, i remember once having to go to Zain on Mombasa road to get a Zap payment, well it's now available at pesapoint, but who on earth would want to go for such a cumbersome process. Get your SMS, go hunting for a pesapoint near you(hoping it is not out of cash), if you live in say Meru, it means taking a matatu to Nairobi to locate a pesapoint? what merit?
Ras Kienyeji Man