[A-Snake]

Just for grins, here is a third value source, Sports Car Market Pocket Price Guide. 2007 Edition
AMX 68-70 Buy/sell range
Low buy $19,000
High sell $32,000
Add 30% for 390
Add 10% for Go Pack, Big Bad Colors or Shadow Mask paint.
Deduct 20% for automatic, 20% for '68
Thus your can be between $26,600 and $44,800 unless it's an auto or has the Big Bad Color or Shadow Paint