The Bounty Hunter TK4 Tracker IV is the Amazon's Choice metal detector with 4.5 stars from ~1600 ratings, and the AU store price recently dropped by ~$50. This is an entry level metal detector without the bells and whistles of LCD screens and bluetooth, but it comes highly recommended from a lot of metal detecting youtubers who have great tutorials on how to use it effectively. You also get a free trowel and carry pouch with this deal.
Also, don't forget the 7% Shopback (Power Tool category), which brings the total to $116.66 (ex-delivery).
Key Features Blurb:
- High quality - Made in the USA
- Up to 20cm Coin Depth Detection
- Up to 75cm Large Object Detection
- 2 x 9-volt Batteries Required (not included)
- Intensity Meter
- Preset Ground Balance
- Motion all-metal
- Progressive Discrimination
- Two-Tone Audio
- 8"/20cm Open Waterproof Coil