Possible value of TMNT/Teenage Mutant Hero Turtles Comic - Turtlemania Special #1?

I have recently found a big box of TMNT comics in my loft (from when I was younger). Now I accept that most have little if any value but I understand from my searches that a mini comic called Turtlemania Special #1 was produced in a limited print run of 3000. Mine is in pretty nice condition and I have searched to see if I can get a price value on this but no luck. Can anyone help out with a ballpark figure?