Well this is from the "Well wasn't that a nice bit of unexpected good news dept."
I had bought three Waves plugins over a period of time, and together they turned out to comprise a "Signature Series" (Greg Wells PianoCentric at the great advice of someone here, VoiceCentric, and MixCentric. I've got a fair amount of experience with the first two and highly recommend trialing them, I like them a lot; the third I haven't learned to use quite yet). And somehow I bought them all at significant discounts, roughly 30-40% off "list".
Turns out Mr. Wells has released a 4th plug in the series recently, "ToneCentric", which by my brief reading is a distortion plug. I decided it may sound nice but for now I really wasn't in the market, so didn't think much else about it.
Then I read that it might be possible there was a significant discount available since I owned the other three, so I decided to check it out on the Waves site. It wasn't immediately exactly crystal clear, so I activated the "Chat with Mr. Waves" window.
The nice man there asked me very focused questions, brought me to the right pages, and as it turns out I get the ToneCentric plug for free!
So, that being better than a poke in the eye with a sharp stick, I am quite pleased!
And speaking to the title of the OP, I have to say that my experiences with Waves, from signing up, iLok-ing, purchasing, using, through today has been nothing but problem free (and super enjoyable, in terms of using the plugs). So I for one have nothing to say but good things about them.
Now, if when I get back to the DAW and download I find that things are not what they were described to be, I might need to amend/revise!