There are quite a few trainers in that price range. You can even find entire RTF packages for that amount. I've put together a list of the available trainers out there. Take a little bit of time and look over the list and see if anything suits your needs.

[link=http://www.rcuniverse.com/forum/m_4537845/tm.htm] Looking for a trainer, what's available. (Updated 1-19-07) [/link]

Hope this helps

Ken