Gina Pruett says she usually gives her friends $10 or $15 when she needs a ride to or from work. It’s a way to show her appreciation. On Wednesday, the ride to her bartending job at the Highland Moose from her home about 10 minutes away was $2.50. It’s the cost of a ride through the Western Oakland Transportation Authority, a door-to-door reservation service that provides bus rides for those eligible, mostly those 55 and older and disabled people, Monday through Friday in Highland Township, Walled Lake, Waterford and White Lake. For Pruett, that cost and the service itself is such a good deal that she feels guilty and likes to tip her driver. “This is perfect for me,” she said.