I don't have Makita cordless tools as I use Bosch blue so I can't speak to the performance, but this a reasonable deal for something that RRP's for $279 and Makita is a reputable brand for tools.
Bunnings has the DTM51ZX5 model (practically identical) at so you could attempt to price match, but I've never had much luck at my local store.
Features:
Tool-less accessory clamp for quick installation and replacement
12 angle setting of accessories at every 30°from 0°to 360°
Variable speed control by dial
Battery capacity warning lamp
Anti-restart function prevents accidental start-up
Accepts OIS - Makita & Bosch accessories
Specifications:
Voltage: 18V
Oscillation Angle: Left/Right 1.6° (3.2° total)
Oscillation Per Minute: 6,000 - 20,000opm
Vibration: 7.0m/s²
Max Output: 390W
Length: 340mm
Weight: 2.0kg
Warranty:
3 Years Warranty Covered by Makita
5 Years Extended Warranty via registration through Makita within 30 days of purchase
bunnings want match it since the model number is DTM51ZX5 not DTM51Z