Gee thanks yawningdog!
Other than renewing my class 1 and IR every year, my initial huge outlay was about 3 years ago when I went commercial. I now work as a humble part-time flying instructor at 2 airfields near London. Virtually all my flights are with students or trial lessons. It would be nice to have something to back up VFR nav and VOR/DME/ADF equipment on the aircraft. That is the only reason I want a GPS. If I can do the job for cheaper than my budget than that's fine by me.
Cheers!