I would recommend calling around to find a shop that will reset it for you. No need to haul off and buy a tool that costs over $100 just to turn a warning light off. I'm sure many independent shops will either do it for free or next to nothing.
1998 BMW 328is
1966 Pontiac GTO
2007 Subaru Impreza 2.5i 5-door
View my photos: Caught in the Wild