Welcome to Microsoft Store!
I'm accepting different payment methods as Skrill, PayPal and BTC. The price will raise to $10 if you will be using PayPal or Skrill but invites aren't included.
I can also make your MSDN admin account have 7 invites in total for only $35 extra. I'm also able to do it in bulk for a cheaper price.

Add me on skype so we can speak further: live:msdnstore_2

Have a good day!