That's not what I am looking for
Here is an example of what I am looking for that sold last year for 3k
Carson City mare
http://apps.keeneland.com/sales/Nov16/pdfs/3698.pdf
48k
20k
62k
77k
that is her 4 trackable yearling auction sales. Obviously she is a little older (15) with only a few years breeding left but someone bought her for 3k whose yearlings averaged 52k
There are a few I have seen from this year similar to this that have yearlings that have sold for 100k that are towards the end of the sale and I think will be in the 10k and under price range. One sold a couple years ago for less than 10k and the foal sold for 75k
Only other thing I would look at is a younger mare with a solid pedigree and good track potential. There were several mares who sold in foal last year with career earnings of 100k plus, high speed figures and nice pedigrees. I would look at those as well depending on the covering sire.
Obviously it is a little bit of a risk but so is gambling.