best one be a bell i bought from a setter trail guy that is in coverdog .
the bell is very good and loud and i can here my dog out too 100 yards .
i think i got it shipped for 30 dollars.
he makes handmade bells.
for 200 dollars you would have to go the second hand route i believe on gps collar .
with alpha out now at 800 dollars many astros or older ones are selling cheaper used.
another option is to get a 100 dollar beeper collar new.
you push button and you can hear beep from the dogs collar.
i think sportdog makes one for 100 dollars.