transfer from Shenzhen airport T3 to Hong Kong airport T1

Hello,

We need an info and an update on the fastest way to get from SZX T3 to HKG to check for another flight on 01st of Oct. I guess it would be so called business bus with 7 seats and without laving a bus and queuing at exit-entry point. Where exactly can we find ticket stand and departure point for that bus at SZ airport T3 arrival terminal? Is price still the same (220 rmb)? Thanks a lot for your help! Cheers