There's a sweet spot with every auction platform where the amount of listings is relatively small compared to the amount of buyers visiting. This is usually a few months to a year after the platform has gone live. We've seen it with site like Flippa, Brand Bucket and Squadhelp etc. The problem for domainers is that the success of the site leads to more listings, greed on the part of the owners and ultimately the listings to buyers ratio going way out and the site being worthless unless you have ultra premium names. This is now GD, Flippa, Sedo, Namejet, BB and pretty much every auction site you can think of. Your name will get lost in the crowd.
NameLiquidate is probably about to hit the sweet spot soon but you can only get a limited amount of money for each name.
Unless your names are of a high quality there's no point auctioning them at all cos you'll just be wasting money.