the cost for 600pieces 18inch:$1.86X600=$1116
the cost for 600pieces 14inch:$0.97X600=$582
the cost for 600pieces 12inch:$0.73X600=$438
so the total is $1116+$582+$438=$2136

I will offer you 12% discount,so the cost is $2136X88%=$1880
the shipping is $110.you can get feathers by Monday.
so the total is $1990.