Rock Band price cut?

Okay, so it's still costing around £140, but Rock Band just got a little more affordable. The music game - that comes complete with guitar, mic and, most impressively, drums - has a frankly ludicrous RRP of £180. Hopefully this cut will lead to other retailers following suit although the general lack of stock when I took a totally unscientific walk around the shops earlier suggests the demand is there. Unsurprising really - get three friends in a room, crank up the volume (essential to mask up the annoying tappity-tap of the drums) and you've got the best party game around. Especially if you like the Pixies. But is it really worth the price? You could buy a Wii or 360 for around the same price. And - I'm making assumptions here - if you can afford to blow nearly 200 quid on a game then chances are job/family commitments will prevent you from playing as much as you'd like. So anyone here taken the plunge?