Be careful what you wish for. This reminds me of former NFL great and Monday Night Football announcer Frank Gifford. At one time, he charged $10,000 per corporate appearance. The grind was wearing him down, so he doubled his rate to reduce volume. Funny thing happened though, the higher rate made him more desirable to corporate program directors and his demand actually increased . I wonder how applicable this phenome…
Subcontract the IE6 compatibility work to someone who doesn't know how much you're charging for it.
I would think that if the subcontractor was good enough not to do bad work, he/she would also not want to do IE6 compatibility work.