ya, try a breakers yard. I had same problem with a car a while back...dealer wanted 350 or something and got one for 60 in a breakers.
you might find a Toyota difficult to source though in a breakers yard.
My advice would be to get the new part fitted. sounds a bit expensive but if you do manage to source one and then get a mechanic to fit it, it'll be costing you about €120. depends on how long you plan on keeping it.
its not a good time of year to be without wipers