A month ago, one of our club members advertised a clean trainer, transmitter and full flight box stuff for $200. Everything needed for a beginner. It was probably a $450 value. You might want to beat the bushes. Contact the local clubs to get on the mailing list of local offerings. Be ready to pounce quickly but wait for a reasonably good deal.

You were very wise not to try to fly your untrimmed Mustang.... the chances of the plane surviving would have been as close to none as one can get.

Best of luck as you explore your entry into the hobby. It is a great sport/hobby/fraternity/pastime.