I think that’s pretty normal. Though the final syllable is spelt ‘bin’ one would normally expect there to be a schwa between the ‘i’ and the ‘n’.

Hearing the driver and laowai side by side really brings home the difference on the final ‘n’ to me. The driver seems to barely close on the ‘n’ at all, which to my laowai ears, leaves it sounding almost like ‘bie’.

I suspect my own rather dodgy pronunciation still has a fairly heavy final ‘n’. But I’m not volunteering a sample just yet.