Im not wanting to spend much money. I want something that works affectively and will get the job done. I know I could spend $2000 on one but Im not. but I just want to see how my son likes doing it and the one I have now is a $99 one and it beeps just to beep and gives false readings all the time. And what store do you suggest to buy from ? I would like to spend $200 to $400 on one. I was looking at this one Garrett Ace 250 Metal Detector Im looking for bullets. coils jewelry and anything else metal from the civil war.