I did that with my Glock 20SF 10mm while I had the money, I bought it new, then I put "just" another $950 into it.
What did you do to it? I am aware of some of the many aftermarket parts and whatnot but, $950 is almost the cost of 2 more Glock 20's!
I have seen some of the custom Glocks and they look fantastic. If it were not for the Glock being the most cost effective way to get into the 10mm I don't think I would have bought a Glock even though I know that they are great reliable guns they are UGLY! The customs are good looking but are $2000 and for that money I would get a STI Perfect 10.