Allison trans

I have 3 buses with Allison 2500pts 5sp transmissions in them. 2 are 2006 and 1 is 2007 All worked fine when buses quit running. $1000 each. Also have 2 2006 VT365(6.0 ford) engines and 1 2007 Maxforce 7(6.4 Ford) engine. $1000 each. All 3 are cores or rebuildable. Buses had less then 130k in them when they quit.