Sounds like you guys are Really getting ripped to be charged 150 Per Element for a new one....
I have a Injection equipt supplier here in the UK that will supply Genuine Bosch elements for 25 pounds Sterling each, Thats around 50 bux...

--Obviously, Not including fitting

.
Easy enough to fit yourself anyway, BUT the pump will Have to be set up correctly afterwards, but you'll save yourself money by doing all the strip/rebuild work yourself--Only 'bench' time to pay for
All you need is the Element number, Its marked on the control-flank of the plunger--You may need a magnifying glass if your eyes are getting tired like mine

....
As for bigger elements, If you can get/find a number, of an element that has the same characteristics apart from fuel volume/diameter then I'll see what I can do--Don't forget--The element can also control the advance in relation to speed/load due to the cut at the upper face as well as the helix cut, and this will have a bearing on torque and smoke etc at low engine speeds....
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http://i190.photobucket.com/albums/z...0TDnoplate.jpg
Alastair AKA H.C.II South Wales, U.K. based member
W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.
W114, 1975 280E Custard Yellow,
-Great above decks

needs chassis welding--Really will do it this year....