The Sig Kadet LT-40 kit is another plane you might consider. It costs 82.99 at Tower Hobbies
http://www2.towerhobbies.com/cgi-bin...?&I=LXFG11&P=0

The PT-40 is 69.99 but requires you to buy a bunch of parts that are included with the Sig kit

RCKen is currently doing a detailed build thread for the LT-40
http://www.rcuniverse.com/forum/m_3439708/tm.htm

Since radio installation comes late in a build, hold off buying it as long as possible. Before spending any money, find the local club and speak to the instructors. Be sure you buy something compatible with the buddy box or transmitter you'll be using during training.