$600 per person?! That's crazy! Last time I used my Avion points was about 7yrs ago to go to Germany and the charges was minimal, I couldn't quite remember it but maybe around $200 or so? Flew AC YYZ-MUC-TXL (didn't take TXL) and TXL-MUC-YYZ. Best thing was I got 100% Aeroplan Points.
I've been trying to rack up my Avion points to be used in about 2 yrs, got screwed late last year from my Esso Points to RBC Rewards, didn't know they severed ties! Now that my Aeroplan points will need to be used before it ends in 2020.
OP let us know if you're able to get a J or F ticket with the points, I'm curious...
Edit: It seems that you wont get any points anymore when you book with Avion points!
https://www.flyertalk.com/forum/cred...l#post29305011