I have a nice list of Opuntia's, which you can find here . It's not complete, not by a long shot. I have many more. But these have to be repotted in my trays, so they can grow a bit. I will be extending my list the coming years. So it pays to visit my site now and then.
Communicating can be in English, in het Nederlands, im Deutsch (obwohl mein Deutsch sicher nicht fehlerfrei ist!). Hablo tambien un poco Español (pero hago mucho errores en Español, y mi Español no es tan bueno).
Payment is via Paypal, or (in Europe), via a bank transfer. After losing a parcel and a small letter, shipment will always be registered and insured. Costly, but there is no other way. Trades are welcome!