10$ a bulb is about average for LED bulbs. Heck, I have seen LED bulbs that run upwards of 45$ a piece on Summit!

They aren't a cheap upgrade relative to what they replace (99 cent bulbs) and I am on the fence myself if i should invest on LED on my Charger or not....I have heard mixed reviews on them.

If you do go with them, I'd be interested to hear what you think of them.