I have a friend who bought a Sony a5100 form them. Guess it’s okay but her camera didn’t have any issues. If got warranty from local tamron distributor then ure golden. But if it’s from overseas then ure on ur own.

A lot of the photogs also go to Berjaya to buy new and used gear at this shop
1) CHUA @ 016-2129900 OR VISIT ACCE CAMERA @ LOT 06-13 LEVEL 6
BERJAYA TIMES SQUARE KUALA LUMPUR

2) or studio Zaloon in Pudu cos he has a lot of training sessions and workshops. Look for uncle Chin