Taken from 30 Years of Adventure:

“Bob (CEO of Five Rings Publishing) asked Peter (CEO of WOTC) if he would be willing to loan Five Rings Publishing a million dollars. Peter, thinking the question a joke, replied that there was nothing in the world that Five Rings could offer Wizards that would be worth a million dollars. Bob asked if Peter was near a fax machine and what the number was, and he sent over the cover letter of our option to buy TSR, which stated the background of the deal, but not the price or our terms.
“Peter called Bob back within ten minutes and asked if a company check would be acceptable.”