For you guys looking for lambo doors, I would suggest that you look around before buying the VDI hinges (which seems to be one of the few available right now which is why the price is so high).
Check for local shops that do custom work, for example look for a place that works on DUB cars or something similar.
Thanks to forums I was able to find a place here in Southern California that will do a set of Custom bolt-on, 90 degree lambo doors. The doors open all the way to 90 degrees or atleast really really close or you can choose to only raise your door to 45 degrees and the doors will stay put. All that is needed is a minor cut on the inside of the fender (VDI I believe is both on the fender and the inner hood). All of this for $800 installed. Far better than the rest for about $1200 for just the hinges. A forum member has these and she does shows with them for over a year so they are of good quality.