My friends and I have ordered somewhere around 150,000 of these primers in various sizes. We have had the odd dud (I personally have had none but they have had a couple) but I would have to say that's no worse than any other brand. In fact the only dud primer I can remember having in the past 6 months or so was a Winchester SP. I also know that some primer failures are the result of poor reloading technique like not firmly seating the primer in the pocket.
You get a price break ($2/1000) if you order in quantities of 5000 and orders over $200 total get free shipping so even with tax in they can be had for about $32/1000 which has to be $10/1000 cheaper than any others.
My only other comments on quality are that if you're using a PPC style revolver with a very light hammer drop you may find these won't reliably detonate as the primer cups are harder than Federals which most PPC shooters seem to use. Also, several months back someone did a great post (sorry, I can't find it right now) complete with slo-mo photos showing flame sizes of various primers. The Dominion ones were not particularly 'hot' although that would only be an issue if you were trying to ignite large charges of slow burning powder. I've used them exclusively for target handgun loads with fast powders and had no problems whatsoever.
