Hi Anuusri
Yes. e-Visa is quite

. But we have to watchout for few things while applying for extension.
Within few days after application & intial payment we would get a "Visa Approved" reply along with a request to make a second payment. This also has to be made
Only after this second payment we would be provided with an appointment at ICA to collect the pass.
I happened to see several people to have missed out the second payment, as they understood that the second payment has to be in person since their visas has been approved already.
They were considered as walk-ins and had to wait in a long queue.
Warm Regards,