I presume are are talking the receiver mounted peep sight? if so , That is a extra 100.oo
I still have a front sling mount for those. 10 years ago good ones where going for 400.oo, so these days 500.oo would be fine. I have seen ones at 600.oo that is pushing it , I think.
All the ones I have had, about 3 or 4 never had bright blue finish. they where all matt blue, same with the #3's as well They had beach stock If one shot poor , it was the operator.