Hi all i am new to metal detecting and i am purchasing my first detector this week, but i was just on ebay and saw a TEKNETICS BOUNTY HUNTER TRACKER 1-D/505 METAL DETECTOR the auction was about to end so i bid for the heck of it and won, it says it is in great condition. I paid $39.99 plus $20.00 shipping. Did i do ok? any help would be appreciated