You will get BCH if you give us ZEC. Market rate. Simple as that.
Current inventory: 1 BCH
We have been around since OpenBazaar 1.0 and were the first Zcash-accepting store on their multi-coin platform.
As there are not yet moderators on the ZEC side of OpenBazaar, we cannot offer moderated payments. If you have doubts, place a small order you are comfortable with, let us fulfill it, and we'll go from there.