As far as I understood:
WooCommerce Product Open Pricing (Name Your Price): You can set minimum & maximum price and allow visitor to enter his choice. You can also display specific message if entered price is outside the min/max limits. Visitor can add to cart / checkout if entered price is within limits.
WooCommerce Offer Your Price: This seems to be where visitor can ONLY OFFER his price. He cannot add to cart / checkout. An email goes to admin / visitor. I am lost in trying to figure out what happens after that. How does the sale happen?
Hope I could help a bit. I think we will need Booster team to explain further.
Yes, “offer your price” looks like a negotiation step but I am not clear how does the sale conclude. Perhaps you can try to play with it on some test site?
Or we hope someone from Booster Team replies here 😃