Used Parts Price Question

I am looking for two rust free doors for my 87 GT convertible. What would you say is a fair price to pay? I've gotten a price of $200.00 a piece from a salvage yard (specific to Stangs), and another on CL asking $150.00. How close is this to realistic? Also, I'm aware of the difference in mirrors, but since they are adjusted manually on the 87, would it make a difference if I replaced the both doors from a car of another year? Thanks guys.
 
Nope the year of the doors wont matter, and the bonus is that if you get doors with electric mirrors you can use them, since our cars came with wiring for the electric mirrors option Just need a switch, top console plate and to plug it all in.

But I've seen them go for about $100 ea for a decent condition door.

Just try to find a GT door, since they have the different molding. Any GT from 87-93 will work, and any door from 79-93 will work, so long as you keep your moldings.