There have been all sorts of numbers thrown around about this subject, but I believe the first one I heard is the most accurate, since they didn't have time to play around with the money yet at that time.  I believe it's closer to $10 billion in equipment, guns, ammo, apparell/gear, etc.  Besides there was a lot more to this story than the public will ever be told.  The Taliban is thrilled.  Joe biden and his "administration" are all idiots and morons.

https://www.globalresearch.ca/inspector-general-us-government-left-more-than-7-billion-military-equipment-taliban/5791071