Actually the price will go up. My reasoning comes from my background with 1st generation Celicas. While those car have not reach anywhere near the status of the US muscle cars of the same era, they are in fact becomeing quite rare and a good example of what happens when a particular car has both a following and a short supply. 10 years ago you could pick up a nice original 1st gen Celica for under $1000. Now you would be hard pressed to find one at all, much less for that price. I sold my 73 recently with a VERY tired motor (using 2qts oil a tankfull), a broken windshield, a destroyed dash pad and a bit of rust and a body in primer only for $2300. (paid $400 10 years ago for it)
The Mk3 is becoming harder to find in decent shape. I know, because Im currently in the market again. Sure I can find clear coat peeling, torn up interior, blown head gasket cars all day long for less than $1000 or even $500. But finding an untouched, low mileage turbo, targa, 5spd for less than $5000 is nearly impossible. (I found one...in white...with 37k original miles...but the guy wants over 10k!)
Edit: went and looked again...its silver, has 39k miles and the guy wants 13k...and to be honest...I would buy it for that if I had the money to spend