I now nearly have all of the best plug-ins from Waves, and didn't pay full price for any of them. They do have some type of sale every month, and if you sign up for their Newsletter, you'll not miss them. I'm quite happy I did this, but rather than pay a lot for the Horizon or Mercury bundle, I just grabbed them when sales were down and they dropped the prices significantly. Took 3 years, but worth it. I'm not liking WUP so much but I understand why it's there. So many people already have so many of the plug-ins that sales are certainly down.
It's either that or something new, which they don't come with as often as they used to.