Clearblue Advanced Digital Ovulation kit x 20. Not sure if it's a coincidence for its price to drop on Valentine's day, but for people who uses this (for whichever reason…), you know the drill :D
Review is pretty good for its reliability. Usually sells for $30 to $40 for a 10-pack in Colworths or Pharmacies so this is a pretty good price drop
Details on how to use can be found here
These are priced quite well at Costco as well IIRC. Does anyone know how much the packs are these days?