For your information P210 parts are not inexpensive in Europe too. For example check this German store for pricing. You can order parts from them directly.
http://www.pistolenspezialist.de
By the way LPA sight for SIG is the same sight as in USA. Slide has to be machined to accommodate it.
Recently I noticed new sight on the market that doesn’t require slide machining. Actually two possibilities exist, one expensive 3 position sight, and one affordable brand new design for P210. Like this one here:
http://www.pkammermann.ch/index.php?cPath=19_35
or this one on page 11
http://www.wysswaffen.ch/Dokumente/E...odukte2009.pdf
And there is always original option like here:
http://www.gunfactory.ch/faustfw/sigp210_sights.htm