$1100 is very reasonable, and I say that as someone who is selling them for cheaper.
The price is dropping because the price on the homozygous is dropping and the hets have become quite difficult to sell for $1100 with any kind of frequency. I easily sold hets for $1800 last year, but this year is very different.
So there are two ways to look at it:
1) keep them because they are worth more than what ppl are willing to buy them for
2) sell them cheaper
I'm keeping 80% or more of my het females from this year, I really can't justify selling very many at "market" price.
Justin