Amazon has Golf Pad TAGS Automatic Shot Tracking System for Android/iPhone for $74.32. Shipping is free.

Product Details:

• Turn your Android and iPhone phone into the ultimate golf tracking and analysis companion: Place tag on your club, Start round in the app, tap the phone before hitting the ball to track.
• Easy to use, know how far you really hit each club, get intelligent club recommendations
• Club distances shot dispersion distance trends fairways hit or missed greens in regulation scoring analysis course strategy putting
• Includes 15 tags, no batteries to replace or recharge
• Automatically track:
  • Shot dispersion for every club
  • Club distances
  • Fairways hit or missed
  • Greens in regulation
  • Distance trends
  • Scoring analysis
  • Course strategy
  • Strokes Gained