Check out the recent posts on AquaSD. I will never buy anything from them ever again.
I did just receive an order from TopShelfAquatics and they were great. Very clean corals and well priced in the R2R sale.
I think the vendors should just be more transparent; if you know a coral hasn't been quarantined, dipped or gone through a quality control process then it might be still worth buying if the price is right and you have the resources to do that yourself. I would still trade with other reefer's, with unknown systems, if the trades/sales were cheap or free. At the prices that some of these corals are being commercially sold for, I'm not sure there is any excuse for any pests. This transparency from the vendors also refers to the unrealistic photos that are being used to exaggerate the colours.
I have learned a lot in the past 3 coral orders I have placed - mainly that some of the big vendors are nothing more than fast fragging and shipping shops with minimal apparent attempts to provide pest-free corals. Refunding the coral is a cheap way for them to ignore the costly quarantine or aquaculture process. They know that in a batch of corals they will likely have some without pests, some people who dip/QT and don't complain, some people who don't realize they have pests until much later, some who receive pests and just dispose of the coral without complaining and a handful that notice what has happened and complain. This last group of people will often have bought several corals and maybe only 1 or 2 are affected, and only those 1 or 2 will be refunded (with no liability for the affect that might have had on the reefer's tank).
If it's something that cannot be simply removed with a dip, or can infest a whole tank, then that is a no no in my opinion. If it is something that can be removed with a dip, then I would be dubious as to how sure the vendor could be that it doesn't have something else that is dip-resistant.