Buying an ASIC miner coms with risks especially with long shipping times and potential damage. To reduce risk, I'd look for trusted local resellers or distributors who offer warranties and easier returns. If I had to order directly, I'd carefully check the warranty terms and consider paying extra for better shipping protection
Potential damage? That is rare, because Asic miners are made of strong iron body, I have friends that have agents in China that help them to source for Asic miners and so far so good, I haven't heard about a dead miner.
The way you use the miner will determine the longevity of life, place in a well ventilated area and you will be fine, heat is the real enemy of Asic miners, make sure they are hashing away at a good Temp.
ASIC miners are built tough but shipping risks still exist especially over long distances.