We work with Lavender it also depends on the size. If a female at or over 1000g then 650 is not too bad since they tend to bring more than babies. I think the market on a single gene female Lavender with no Hets or other genes is about $350-$400 so for an established Adult or Subadult that would be to size to breed this winter 650 would be a fair price imo. If she is a juvenile, its a little high. We bought 3 female Lavenders, a female Lesser Lavender and a male Blackhead het Lavender in the spring of last year at about 500g (except the male was a hatchling) each for $1600 for the group.
we got her from a local breeder was 650 cad but that doesn't matter any more wife fell in love with her named her london i believe she was 1200 or 1300g