I have listened to one at work (not really sure which version), $120 is probably what one of these is worth. Still, I don't think it sounded very good. If you just want something that gets loud and overemphasizes bass then these are great. Sadly, many people regard this as "good sound." Even more puzzling to me is that many people will use these types of docking systems as a stationary stereo system when they could just as well be using real speakers for the same price or less than some of these "premium" docks.
In any case, I have found that beats products that I have used (docks, the beats pill, and various editions of their headphones) rely more on their obnoxious looks and "cool factor" than anything. These products usually sound disappointing, or as good as something that can be had for 1/3 the price. The puzzling thing is that when try I help a customer at work who is looking to spend $300+ on a pair of beats, they are rarely even willing to look at something we carry in the same price range from Sennheiser, AKG, Audio-Technica, etc. it's a tragedy, really.
ht Panasonic TC-P60ZT60, Monitor Audio: Silver RX6, RX Centre, Radius 90HD; Martinlogan Dynamo 700, Marantz SR5006, PS3, Oppo BDP-103D
2ch Marantz PM8004, Sony BDP-S1000ES, JVC T-X3 tuner, Monitor Audio Silver RX1, REL T3, Apple TV, Peachtree Audio DAC•iT
lr Panasonic 50ST60, Sony BDP-S5100