they do have a tuneable bass thing on them but i dont think anyone uses it, they set it to max because if you didnt want lots of bass you wouldnt have bought it in the first place.
as for price, no that guide may list them at the US price of US$450 but in europe they are vastly cheaper.
a quick look pulled up http://www.hifigear.co.uk/sennheiser-ie80-headphones.html they seem to have gone up a bit since i looked last but still worth streatching to. if you want awesome and big bass its simply the best at it in the IEM world.
ooooh brain fart, check german amazon. et voila http://www.amazon.de/Sennheiser-504771-IE-80-In-Ear-Kopfh%C3%B6rer/dp/B005N8W27I 189 euro and they have the mic'd verson too for the same money.