Where is Buyer's Zip code on a Best Offer?

[rfmtm]

I usually ship free, so knowing the buyer's Zip Code with a Best Offer is important in deciding whether to accept the offer.  In the past the buyer's Zip Code was included with the offer, now it's not and I don't see anyway easy to find it.  Any suggestions short of having to message each buyer for it?

[redmodelt]

You are now asking about something which is different than your original question. You can turn off pay at time of purchase if you do not want to use it. If turned on, the buyer would have to contact you before buying and ask you to turn if off if you/they were going to do combine shipping, that would give them the 4 days to pay. 

For better information, suggest starting a new question.

[rfmtm]

Yes, got a bit OT, but the auto-pay affects offers as well.  Still OT, I have been trying to change that setting, but keep getting an error message, so maybe they are fooling with that again too.