er.... "will be getting the Cat A ($10500) COE" means you
already booked?
if yes, it means they have already secured the Cat A COE for you
and you cant change it anymore.
if no, you do have a choice of either Cat A or Open Cat, but doesnt
serve any purpose to get Open Cat if Cat A is cheaper than Open Cat
since your paper value is based on the Cat A value of the same
bid.
If you get Open Cat when Cat A is more ex, your paper value is
based on the Open Cat.
Worst case, you pay more for Open Cat (due to urgency) but paper
value based on cheaper Cat A. (they also know how to count, they
are unlikely to sell you based on Open Cat at same price as based
on Cat A. They will only go to Open Cat if they are under pressure
to clear stock)
