Best Offer

Earlier this year EBAY started accept best offer and many of my store items offer that option. I am ok with it most of the time BUT I had an incident where someone who sells Avon Vintage (read discontinued) fragrance made a low ball offer of $4.00 when I had offered a full bottle for $7.99. Now the reason this did not agree was she was already selling a bottle for $35.00! I was not amused so I declined the offer, upped the price on my bottle, and am still aggravated. The thing is she could have paid my asking and still made a profit, but wanted to take advantage. Now I have sold many buy it now items but never saw another quite like this. What do you think I should have done?