They are merely doing it the proper way and the parts should be most the cost.
Try-Tried, Loose-Lose, In-An
No diagrams produced by BMW of the washer system sadly, but its pretty simple. The pump sits inside the fender attached to the washer bottle. The wheel and the inner fender liner is to be removed to at least see it, getting to it is more tricky, some might have to actually remove the fender depending on the size of your hands. In doing so you need to possibly remove the headlight and front bumper. There should really be only one hose that runs up into the engine bay
goodluck