Let´s wait until it´s out before fully judging them. I think alot of sellers still have a chance of making some money but the biggest factor right now is availabilty and how fast they can get them out. Although there are DIY solutions that are cheaper, those boards are also get hard to find. The available ports are great if you have one of those devices but if you don´t, it´ll still cost more to acquire one.
So although these clones are basicly a DIY solution with an extra 20 or 25 on the price, I think some people would pay that to have it NOW. The PSJailbreak guys really dropped the ball. They should have had plenty of supply the minute they anounced it. I was ready to support them for being the 1st "chip" for the ps3 but the supplier I usually buy from in Spain still has it on preorder.
I agree, if they are selling this with the FTP pre installed and claining it s there own. I´m not sure about that though. they might just be saying what you can do after you used the dongle. In this case referring to CJPC´s great program. I´m sure when they say you can play backups, they are also referring to the original BackupManager. So I wouldn´t be that quick to jump on them.