There is no fixed price, but to give an idea: the Nortel bankruptcy estate sold about 6,000 patents to a patent troll, the Rockstar Consortium, funded by Apple

There is no fixed price, but to give an idea: the Nortel bankruptcy estate sold about 6,000 patents to a patent troll, the Rockstar Consortium, funded by Apple -- the largest stakeholder with 60% -- for about $3.2B eons ago. So that works out to about $500K per patent! It's too bad that Apple's, or the Rockstar's, plan to troll Google/Android makers collapsed when the chief district judge saw through Apple's ulterior motive and declared California the proper legal venue for hearing patent infringement case, pulling the case out of Judge Gilstrap's hand in the the Eastern District of Texas.