If you have had a bad experience with a vendor, please let everyone know!
Royal Orchids on ebay and Larry's Orchids on ebay immediately come to mind for me.
****Here is the scoop on ebay sellers. If you click on the number of their sales next to the name, you will see a page with Recent Feedback Ratings. Here you will see positive, neutral, and negative feedback for 12 months. I only buy from someone who has no negatives or very low negatives. Better yet, you always will be able to buy confidently from a top-rated seller who has a blue ribbon icon on the selling page. These are folks who have large numbers of sales with 99%-100% positive feedback.****