The best way I have found to assess a place which sells orchids is to actually call them.
I personally am very comfortable with emails and internet and this is my preferred method of communication.
I will contact places by email with my questions and purchase interests.
But to be honest, the sweetest most fun conversations I have had as of late have been in contacting these nurseries by phone.
Such a wonderful friendly bunch no matter who I have called.
I must say a "day brightener"
So if you have any doubt...don't be shy and pick up the phone!