My wife can't stand the led lights on our new T.T. she would like to change them to a more warm looking type. I told her that's going to cost us an arm and a leg if we are going to change every light ...
Definitely check eBay. One suggestion is to buy from a USA supplier and not overseas. Makes it much easier if there is a problem and shipping is much quicker and the price difference won't be noticeable. $1/bulb is a good estimate. In my last motorhome I had over 70 halogen bulbs to replace! Buy a couple cheap ones from different suppliers to try out before you order all of them.