A practical approach to spending? With RC? Hey, wait until you go to your first "big show" like WRAM or Toledo. You had better consider one of two things: Either leave your checkbook/credit cards at home OR plan on bringing a van with you..
Yeah, the my only point was that I sold my trainer to someone that had crashed his. I didn't really want to but I did. He later died of cancer, unfortunately, and that was out of state or I would have tried to purchase it back from his estate. So, I ended up buying a club trainer and using that for two purposes: as a club trainer, of course, and as a trainer for me to fly when I wanted to fly a trainer. Thus the suggestion that you never throw it away.. keep it intact.
Believe me, you will want to pull it out on one of those days that flying something else just doesn't appeal to you... OR... you find a student (and yes, you will reach that level) that will want to learn RC and you will want to re-famialiarize yourself with your good old trusty trainer before you buddy box up with that student.
CGr.