While I would recommend them for plants that don't hybridise, I would advise against others. I've learnt the hard way. I've received several Echinopsis Bridgessi that looked good, but with several months growth they are now pumping out sets of 7 spines? WTF. Also they advertise Echinopsis pachanoi, but when they arrive they are label'd pachanoi-x or pachanoi 2:-(
If you live in Melbourne, Australia & are seeking cacti I strongly suggest visiting collectors corner at garden world;-)
Bunning from time to time have sought after cacti, but they won't label most Echinopsis breeds- except scoplicola.