I do sell IT surplus equipment and the real issue I see here is that the fees are about double that of eBay's. The exchange getting a 20% cut is a huge deal on the lower-end items. Combine this with their limited user base, general shopping practices, and small amount of value add, it's not worth the extra pricing information.
For instance: I have a stack of Cisco 2960G Switches. I can go to eBay, do a search for closed auctions, or go to any number of pricing services to get historical selling prices. Since these are common, I will have no issue seeing the buying range. I make a compelling ad, pay $0 to list and pay 10% on the final value and probably 2.7% on the payment end. I can make a compelling ad and create incentives to get people to use me instead some other seller.
Now take something like a Thin Client, KVM cables, Rack keyboards, etc: low volume, and low price. Same fees for eBay. Double for this exchange. AND no one is looking for them because it's geared towards the network hardware side of things.
While I think it's a good idea and if they can get people to pay that much for an automated pricing system, great. But I'll be skipping it for now.