If your business model is so thin that 3 dollars cripples you, really you need to re-think.
(As an example, do we really think that the Comet/Currys/Circuit City sitting in a big car park miles out of town is running a sustainable business model for buying the latest gadgets? )
And on the demand side, do we think it is likely that the law firm that has five floors in the office block will decide that since all the cleaning companies costs have gone up, they will just leave the bins overflowing and ask the clients to wipe the toilets before use?