Not feasable to pay using paypal for local transaction unless you need USD. Even paypal is not safe as the sender can retract the money sent.

For local transaction...if possible do COD.

By the way...what does your buyer meant by FULL BANKING DETAIL? Just giving your account number and name is enough. Do not give I/C number as it's very risky. However, I think there are certain banks that needs I/C info to enable online interbank transfer to be done...I think Public Bank do this for security purpose. Maybank should have no problem.