The post below leads me on to a strange phenomenon - a kind of guilt people in "paid ministry" can get when they get new things.
A kind of inverse status anxiety. In some cultures the expectation is for the pastors etc., to be driving Mercs and having a nice life - but my background says mission and ministry people should live "simply", hence worry that people might think you're suddenly loaded because you have a new gadget/car/trainers etc.
Comes back to a previous post - Christians often don't deal with money well!