I was never a big fan of offers but now I am put off even more as I'll pay the buyers BPF!

Because of the clumsy way ebay has modified their system to accommodate the BPF, they will actually make less from their bogus BPF because if private sellers do not use offers this will result in less purchases from buyers and less BPF for greedbay.  Of course ebay won't care about the negative effect on the private seller but who knows, if they identify a drop in their turnover,  they may amend the offers system.

I think they were in such a hurry to start grabbing all those lovely BPF's knowing full well they were not going towards additional buyer protection, they didn't think it through properly with regards to offers or combined invoices, both aspects of their system which are either broken or not worth the hassle of using.