Here are some LED's that I am using and they are $4.99 with free shipping. They offer the warm white color which is most like an incandescent light or the pure white which is most like fluorescent lighting.
The seller is dxy_dxyduan. The set does come with 3 plug bases; festoon, wedge base, and bayonet.
The set I bought are here: http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWNX:IT
Hopefully they last longer than the "1 year" life that people are experiencing here.