Sorry to see this mate.
Cars get written off too easily these days.
Unless you are desperate for a change of car and don't mind driving a cat D then buy it back as from what I can see yours can easily be repaired for half what you've been paid.
Zeds are strong cars.
I went from this nasty race crash
To this rebuilt and better Zed
PM me if you want any info on costs of the rear quarter panel,paint etc.
Feel your pain mate.