NewEgg had a good deal on some Crucial RAM, so I finally picked some up to upgrade the significant other's Mac Mini to 3GB. However, before I go through the hassle of opening the case and doing it myself, I was considering bringing it into an Apple store and letting them do it. But I was wondering--do they charge for this service, or is it complimentary? Mind you, the Applecare on the computer ended last month. If they charge more than $20 I'm just gonna go ahead and do it myself.