Cost evaluation for my most recent Avianca LifeMiles spend.

Tokyo - Los Angeles : ANA in first

Los Angeles - Vancouver : Air Canada in business 

Vancouver - Tokyo : ANA in business 

Tokyo - Sydney : ANA in Business 

The Miles I am using were purchased in December 2014
They cost A$17.45 / 1,000 to purchase (OZ dollar was much better then)
The cost to purchase miles as part of this transaction was approximately A$21.20 / 1,000 

Ticket 1: 

Tokyo - Los Angeles : ANA in first 
Los Angeles - Vancouver : Air Canada in business 

The cost to purchase in LifeMiles solely is 90,000 + taxes + booking fee

I did a part purchase using 56,000 LifeMiles and paying A$818.40 (US$579.76)
US$44.76 Taxes, US$25.00 booking fee, US$510.00 to purchase 34,000 LifeMiles 

Total ticket cost : A$1795.60

Ticket 2: 

Vancouver - Tokyo : ANA in business 

Tokyo - Sydney : ANA in business 

The cost to purchase in LifeMiles solely is 80,000 + taxes + booking fee

I did a part purchase using 49,000 LifeMiles and paying A$787.59 (US$556.43)
US$66.43 Taxes, US$25.00 booking fee, US$465.00 to purchase 31,000 LifeMiles

Total ticket cost : A$1642.64

All up so far is A$3438.24

The only thing left to do is purchase a economy seat from Cairns to Tokyo and Sydney to Cairns. I never use miles/points to purchase any type of Jetstar flight or domestic flights in Australia, I can't see the value in this as Qantas requires so many miles/points and also an overly high fee on top to buy a seat on JQ.