The 9 sacks look real good but he is a liability against the run, out of position or too easily moved. Basically an interior pass rusher and not an every down tackle imo. A team out there will overpay for those sacks, that seems almost certain.
Some people seem to think that the Bills have a lot of cap to throw around and overpaying for Phillips' services is no big deal, I would much rather see that money used on top level talent, long term solutions at positions of need that take more time to develop draft picks.