Price unfortunately is extemely subjective to things like seller motivation, buyer motivation, area and current status. For example, you picked the absolute worst time to show interest in a 67'. Since Fugleanor hit the big screen people all think their 67' anything is worth $50 a pound. That doesn't mean you can't find a deal, but you may have to look at a lot of over priced crap to spot that diamond in the rough. Here is a very general plain jane V8 coupe price guide, but obviously the more options the higher the value. Most of the cars you have seen are likely based on this high number, but they do not match the high value description below. Again, this is a rough guide, not a bible.
1967 Ford Mustang
2 Door Hardtop
MSRP..........$2,567
Base Price.....$4,350.....$8,450.....$12,900
Other Vehicle Information
Model Number: N/A
Weight: 2803
Value Explanations
Low Retail Value
This vehicle would be in mechanically functional condition, needing only minor reconditioning. The exterior paint, trim, and interior would show normal wear, needing only minor reconditioning. May also be a deteriorated restoration or a very poor amateur restoration. Most usable "as-is".
Note: This value does not represent a "parts car".
Average Retail Value
This vehicle would be in good condition overall. It could be an older restoration or a well-maintained original vehicle. Completely operable. The exterior paint, trim, and mechanics are presentable and serviceable inside and out. A "20-footer".
High Retail Value
This vehicle would be in excellent condition overall. It could be a completely restored or an extremely well maintained original vehicle showing very minimal wear. The exterior paint, trim, and mechanics are not in need of reconditioning. The interior would be in excellent condition. Note: This value does not represent a "100 Point" or "# 1" vehicle *.
* "100 Point" or "# 1" vehicle is not driven. It would generally be in a museum or transported in an enclosed trailer to concourse judging and car shows. This type of car would be stored in a climate-regulated facility.