Fee

Hi there,
I'm a New Zealander travelling to Vietnam in October and am arriving via a land border so am unable to qualify for a Visa On Arrival. I've tried to get in contact with my Embassy here in New Zealand but to no avail. I was wondering if you had any idea how much the Visa fee would be for me to send it away to Wellington and process? I have filled out all applications and what not, just need the fee to send it away with the application. I know you only specialise in E-Visas but if you could be any help that would be great! am at a real loss here!
Cheers,
Rose :)