This should be Kelly 32 Sellier? (Please correct me if I am wrong, other JMs~)
Got one last month and it costs 79xxx in Epsom leather (and It should be more expensive for other leather in the same spec) hope it helps!
Btw, I love Aimee very much and she looks great in her Kelly bag!
I actually think this one is size 28. Looks like smooth leather which is more expensive than softer grainy leather. Should be around $7x,xxx or slightly more but smooth box leather not readily available and usually have to order. Can find many good quality pre-owned ones in this leather though.
the dimension, especially the width from where the handles are connected to the bag to both ends of the bag, suggests a 28cm because for a 32cm that length would be longer, but of course it depends on the angle the pix was taken and I could be wrong