Dunno if the bulbs are the same, but the local dealer here told me they wanted 12€ per bulb for the AC controller.
I went to an electronics repair shop (they generally do TVs and stuff) and got bulbs for 1€ a piece, screwed them onto the bulb bases. Was a pain getting the old bulbs out, but it was possible.
LED + resistor might be a better way to go, though.
PS: Stuff like this is why I never visit the dealer here. They overcharge like hell. ATF+4 is 25€ a quart, for an example. Since I develop a leak every month or 2, it's cheaper for me to use a generic oil and, if the transmission should fail, replace the transmission. So far, it's been a year and the generic oil (Liqui Moly Top Tec 1200) hasn't blown anything up.