Yes, and the "percentage" business is one of their classic tricks. Oh, it gives you 80-90% of the sonics for only a fraction of the price! As if "sonics" can be quantified at all, let alone on a sliding scale measured based on percentages. But that gets the attention of the masses, meaning most people who would find $400 to be quite a stretch for some such contraption to begin with. Yet, at least now they can think they are getting a steal of some sort.
Meanwhile, 80-90% of what is possible is nothing to the guy who wants 99% or 100% and will settle for nothing less... so he won't lose that customer either. Don't ask me how I know that. MBL in my case. No regrets because I could afford it and it's what I wanted, but price certainly wasn't my first consideration.