Despite the ad date, just got one from Bexhill, East Sussex for 39.95. Quite a few (>10) left in the pile.
Generally as you'd expect for a chinese jobbie (it's NOT a Makita/Bosch/etc). But despite that, it does seem fairly solid. Comes with 2 spare diamond discs and the spindle assembly looks robust. 3 chasing widths (spanner and a fair bit of fiddling to change) and knob adjustable depth. Cutsy cheap laser too.
Haven't run it in anger but I did spin it up and it's about as noisy as you'd expect, but seems stable.
With the caveat I haven't tested it on a wall yet, I reckon that for a single job like mine it's worth it even it it died afterwards (though it claims a 3 year warranty) - still cheaper than hiring. Probably survive longer than that.
Got an 11w semi-rugged fluorescent inspection lamp with a surprisingly long mains lead for 3.99 too. I am now an ALDI convert :)