I recently decided to give them a go.... submitted a list of 6 4-letter and 1 5-letter coms. All of them had something "special"branding wise, but on top of that most were aged, registered in numerous extensions and had daily type-ins. I heard back 8 days later, which was nice. But, surprisingly they only wanted to accept 1.... and it was actually one that I would have considered more towards the middle best for branding. That would have still been fine, but I did not realize that we are LOCKED into their suggested price, adjustable up or down by ONLY up to 20%... they suggested a price of $5K for this domain, meaning my max asking price could be around $7K..... which seemed odd given that, browsing their inventory, I saw SEVERAL other domains that were longer, and imho, less brandable than the one they accepted (and even the ones they rejected), being listed for SEVERAL TIMES the asking price they suggested for mine. So, I respectfully declined and will not be listing it there.
Don't get me wrong, I believe they have a GREAT thing going, and sure seem to be turning sales, but being locked into their pricing was a turn off. I can understand them not wanting a lot of domains with outrageous asking prices that will, most likely, never sell, and wanting to get pricing to a point where, even with their 30% added on, it has a better chance of selling.... but I think there has to be another way of finding a solution regarding pricing options/max pricing etc.
I also struggle with the whole "logo" as well.... many of them seem to be only a mildly interesting font, no real pizazz, and although I can imagine that largely depends on what you are willing to have tacked onto your asking price to cover the logo, I also think that, UNLESS it was included to have logo colors changed etc at buyers request as part of the price, the chances that an enduser is going to want to brand exactly on THAT color selection and logo style seems unlikely. But, maybe they do... and are just happy to not have to think about about the colors for their website and just build around the logo that is included. Dunno.
Anywho, good luck with them if you choose to list there and get accepted!
ADDED: Also, another concern I have is that there doesn't seem to be any room for "negotiation"..... the price is firm and the only "budge room" I can discern is that if THEY are contacting people for a sale they can "choose" to use their 30% as wiggle room... but, for the average viewer browsing the site they see fixed prices and can not make an inquiry/offer....