First of all sorry to disturb you again :-)
I have few questions which are asked by my clients about your plugin please take a look below,
1) Best offer option is not there.
2) Where can set the tax rate from profile?
3) Handling Fee in shipping?
4) Where can set Return type like Money back or Money Back or exchange?
5) Return Shipping : Paid by Buyer Or Paid by seller.
6) That's It.