Tow Bars

So how can it be so expensive to fit a single electric tow bar to a car these days, after all there 1000's of Caravans out there and the queue on the way into the tip on a sunday morning tells me that there is still enough trailers in the world.
Now i run a 59 plate Passat Est, as pictured below

Now nothing special about it really, the previous owner wasn't very good at parking and because of this there are a few marks around the old girl but its an excellent work horse and excellent on fuel.

So to cut a very long story short, the worst price was nearly 2k and the best was £600.
Goes without saying that the worst price was a main dealer. 

Now at this point i gave up, thinking that there's clearly a reason behind why there expensive and as the mileage is creeping up, it will only be with me till the middle of next year at the latest, i thought until today there's little point and leave it.
Then spotted out the blue on TowSure web site, they are doing the same towbar with single electrics fitted for £239.70.
Why couldn't i have spotted this a year ago when i got the car as now its less than a year too replacement and i have to say the idea of putting one on now seems daft.

Always pays to shop around slightly.