This is from Supply Management in May. A quote from John Paterson, VP & CPO at IBM:
Sellers are more aggressive in their terms and pricing as they desire to maintain capacity and revenue streams. Sharp buyers recognise this and will typically look to place more business up for bid, take actions to renegotiate contracts, and seek out new suppliers. As always buyers should recognise markets change over time and they should do nothing that will damage their buying position when it becomes a sellers’ market again.
In these sorts of conditions reverse auctions are a great tool because they are able to cut through long-held assumed market prices and uncover exactly where suppliers are willing to go. But note John’s sage advice about not abusing market power. Again, reverse auctions, done well, are a good foundation on which to build solid supplier relationships (this has certainly been the case for me).