Well I had a good day yesterday.
Our car developed a fault, which I discovered on Tuesday when I was using a silicone spray to lubricate the window channels, whereby the rear nearside passenger window wouldn't wind up unless I kept activating the winder switch & it came up in stops & starts.
To rule out a window motor fault I used the rear door switch & the window came up ok so I took the faulty control unit out of the driver's door, stripped it down & cleaned all the contacts but before I put it back I found a Chinese replacement on Amazon for £9.99, which arrived yesterday.
It works perfectly so I've now got a switch unit that doesn't show the wear that the old one did, which I've kept as a spare.
I don't know how much a garage would have charged to do what took me about 15 minutes as they've have probably stripped the door down to check the window motor.
There are some hilarious YouTube clips with people showing how to strip down this switch & none of them have realised how it can be done in a fraction of the time they took to do it.