Hey. I couldn't get as good a deal as you but I got my brp hid for $339 total so I am very happy!!! Yes these are high quality stuff. HELLA makes some good lighting equipments and those housings are very important. They are the right ones for hid bulbs.
You can't use your old ones for fog and I read the instruction and they left out removing 2 screws on front side of Tupperware.
Yes, hid are good investment for both form and function.
Hard is a relative term but first time I did something requiring removal of trunk and Tupperware, it took me 4 hours, 2nd time, 2 2/1. Before spyder, I have not done oil change myself so I don't think it's that hard but and that's a big BUT, I could not have done it without "how to" threads here.