Had a problem with the fan on my MacBook Air. The guy opened the casing on the spot and turned out it was just dust. He didn't charge me anything and just brought out the tip jar. Thumbs up.
BIGGEST RIPP OFF! THESE GUYS DESERVE TO LOOSE THEIR JOB. THEY ARE NOT BEING HONEST & ARE AFTER YOUR MONEY CAREFUL YOU WILL GET OVERCHARGED FOR ANY SERVICE THERE I CAN GARRANTEE YOU AFTER MY EXPERIENCE