Not really sure as I have always paid with credit cards, but they do all take pre-paid credit cards you can find almost anywhere these days. I'm sure others on here may know more about that. Good Luck.
Paypal doesn't deal with tobacco products and can actually ban you from paypal in doing so. But like BigSnoot said, pre-paid credit cards are the way to go if you don't have the standard credit card. Most grocery stores carry them along with a few select gas stations. Just pick one up in the denomination you want then register the card online or by phone as per instructions. You then ready to order snuff from any shop that accepts cards. Visa or Mastercard seem to be the most widely accepted so look for one of those.
Here is a nice list of online snuff shops in order with the country of origin. Online Snuff Shops