[BAracer]

Ouch!
£18.55 postage to Australia International tracked. 
No idea why the UK post office web site gives one price and the post office counter gives another...
Bit the bullet. Paid the money. The girl is on her way down under. 
Alan

Well...

Went on the Royal Mail app, and £18.55 tracked it is.

Went down to my local little Post Office and I was offered: -

£8 something non-tracked
£14.15p tracked

So went for the latter. Looking at the receipt, it's gone International Tracked Small Parcel (181g). 






And before you ask...that weight is the 180g car with a 1g address label stuck on it. That'll show them what a heavy car is!