There are a couple with low hours on Ebay.
One is item # 7701931258
I bought one earlier this year in a package deal (15 HP Metro HP) for about $2000. It had the mulching kit too, would have been right at $3000 new, it was bought in November and had only mowed 3 total yards.
If you can find a quality mower with very low hours, why buy new? It still has a 2 year warranty.