To be honest with you, and yes its worth the money, i would head north to Iquique for a weekend to look at bikes. Its the taxless zone here in chile and bikes going for 4,000,000 pesos on the regular market go for around 1,200,000 pesos there. A bus pass will run ya about 25 - 40,000 i think, but in a month or so when i go for my bike, I will be buying it there. You need to be a foreigner though for it to work on your side, if not they make you camp out there for around 3 months before the viechle can leave "la zona franca".
I will be leaving in mid december heading north.