Ann: Boorara Stage 1 Feasibility Study Supports Development, page-3

My guesstimate was around $1600 AISC including toll treatment.

From the report above it looks like their AISC of $1680 AUD includes toll treatment as well -

"o Toll milling at 91.0% metallurgical recovery produces 8,700 ounces recovered
o Low up-front capital costs of A$0.44m
o C1 Cost of A$1,570/oz and All In Sustaining Cost of A$1,680/oz
o Project generates A$5.8m in free cash flow at a current gold price of A$2,350/oz"

"Allowances have been made for mining load and haul, drill and blast, dayworks, clearing, grubbing
and topsoil placement, site rehabilitation and associated site overheads for staff and management.
Ore haulage, processing costs and the associated state and private royalties have also been
incorporated into the financial analysis."

Not $1950 as you mention in your post.