It's better to use reliable hostings, I haven't heard of burst.net. And they do look pretty expensive from the looks of it.
I suggest hosts which are made for Ragnarok. If you are in Malaysia, NickiZai appears to be a good one.
Anyways, It is your choice on getting a host. I've never tried burst.net. If you want to, look online to see If it's a reliable host.