Those looking for high quality nearly perfect LED interior lighting should visit: http://www.thinlite.com
and download the LED fixture catalog.
While not "cheap" by any means they're pretty amazing in light output and very, very low current draw. I'm using two inside my work van and with both on in the full brightness setting they pull just at 2 amps total.
Back in the early 90's I bought a trio of their 12 VDC fluorescent T-12 fixtures which are still working even to this day. FWIW those units have over 150K miles on 'em, in addition to their age. Pretty impressive quality.