Going to sell my STR15 intake; what's it worth?

Pictures would help.
A complete set up is worth more though a little harder to sell as a package.
How clean it is also a issue. If it is dirty, one may be inclined not not to purchase it at full asking price or at all due to fear of hidden issues that could simpley add cost.

A freshly glass beeded unit is eye popping candy that makes someone want it more dispite a higher price. Same goes for the carbs.

I have seen prices range from $1500 - $2500 and more depending on a few factors like above and completeness of the set up.