I lost a trivial amount of haldex fluid when I did my haldex install. Unless your a total klutz, I don't see how it would call for a full haldex service after that. At the most, you can add a few drips if you feel you've lost too much.
120 bucks to install an intake? Wish I was local to you. lol. Sway bar install is a tad more involved I suppose (but not really) so also, they're trying to give it to you raw.
Running the switch for the haldex can be tricky, but again, not all that difficult. Truthfully, i'm glad I had someone who had installed the haldex and the switch in their car before to give me pointers and help me run the switch.
tldr: stealership's trying to **** you.
If I was local, I'd do the installs for less than half the price (if that) and you'd be able to have more fun doing it.
I'm sure someone on this forum is local to you and wouldn't mind helping another R owner out.