Hey Jamie, for your friend to buy Zarp VIP for you, link him this post and follow these instructions.
Pictures detailing instructions or places to click are in
SPOILERS.
Your friend will have to click the "Gift Zarp VIP" button on your profile (located under your profile picture)
He will then be redirected to a page detailing the procedure how you and your friend can claim your and his benefits if you gift him Zarp VIP.
Once he clicks the "Buy Now" button from the page that I provided above, he can pay via his own Paypal Account...
Or with a Debit/Prepaid Card, a Credit Card, or with Paypal Credit.
If your friend has any troubles buying you Zarp VIP, or claiming any of the benefits associated with it, please let us know, we will always be happy to help!
Thanks!