The 71 barracudas in any form or condition are generally the most expensive Mopars of the era. I've been looking for one for years. The volume of them out there for sale seems to be a lot less than other years. If you're willing to pay top price, there is usually one out there for you but if you're looking for a good deal, you could be waiting a while like me.
Don't mean to be a Debbie downer but want you to know the real truth so you don't get quickly discouraged. My plan to get one is to save about 50-75k that I have no other use for so I can pull the trigger immediately when I find what I want. (Paying off my house comes first though haha). This is one car you cannot kick the tires on...good cars at the right price disappear fast. Especially cars in lower price ranges.
On the plus side though, if you are willing to throw down more money on a nicer car, then you are in a much better position. 75k cars don't sell in a day even if they are worth much more. The reason obviously is that few people can part with that much money on a toy. That puts you in a better buying position and you can sleep on a decision without it being bought out from under you.