I accept:
Banktransfer (cheapest for both parties and very fast since the online bank possibilities)
Certified bankcheque
Paypal

I never acccept non guarantueed cheques.
The bank can take it back even after a couple of month's!

Paypal is very fast but you can't get verified adresses outside usa/canada since the paypal organisation has not find a way in their systemsoftware to verify the international adresses electronicly.
If the paypal member is a longtime member they usually are ok, and if they sell themselves through paypal they will have feedback which also is an indication that they excist.

Hope this helps.

Greetings, Fred