some features needed

Hello,

This is a fantastic plugin with brilliant idea.
I am modifying some codes to be fit in my site and I want to share what I’ve done and ask some features for next update.

# done
1. changing number format : my site using KRW and there should be no decimal so I removed decimal. It would be nice if all number format follows the base currency of woocommerce in next update.
2. adding pagination to offer list in my account page : no pagination yes headache. I added jquery pagination manually.

# ask – critical
There is no limitation for submitting an offer. An user can submit an offer, refresh the page, submit another offer for the same product, refresh the page, submit another offer for the same product ,,,,,, It would be huge spam…
I think there should be a limitation that an user can only submit an offer if the offer is new or previous offer is expired/completed.

I want to make that limitation but don’t know where to start..