Still more than I'd like to pay (TekNet in the States quotes $90 for a Trace, which would be fine for my "lab") but what you going to do?
It depends entirely on how much you value the cal certificate, and what confidence you already have in the instrument.
The meter is most likely to still be within spec (you are paying for calibration check,
not an adjustment), so if you have other means to gather confidence in the instrument (another meter to cross check, your own standards etc), then you can argue the cal is a waste of money unless you no longer have confidencein the instrument.