downlights

I've been trying to find out what products are often used to create a recessed downlight in eaves, and what the prices are. My inexperienced search only turned out a product which was about $70/light, which seems awfully expensive. So, what do people use to create recessed downlights in eaves...

i live in a fairly new apartment in dublin, never had any problems with lights wireing or anything before, just got six spots/downlights with the transformer bits and a dimmer switch put in, they work fine when on full power but they flicker up and down when they are dimmed??? i watched how...