Could go either way. IMO, I would lean towards 3.0 if they let the 5.0/5.5 type quality of the back cover sway their overall technical grade to 3.0 range rather than 2.5 range! IMO, everyone's grades favor front cover/spine attributes over the back cover particulars, but as Overstreet states, grade a book on a whole. Back cover condition is important too and this back cover is far more reminiscent of a book in the 5.0 rather than the 2.5 range. So IMO, that would pull the overall grade up to at least 3.