I would be doing the exact same thing if I wasn't loft and bunk, but since I get a fridge anyway, there's no point in bringing extra (though I do have my own). Regardless I do think the new fridge policy is stupid, especially with how sketchy the Coldex website is.
http://www.coldexrents.com/
Look at how sketchy the credit card submission page is:
https://secure9.securewebexch ange....ster.htm#order
It's a wonder so many universities got sucked into doing business with them when they don't even appear professional at all. I wouldn't feel "secure" giving them my credit card information.
Even if people don't join your group, I bet you a lot of students will sneak their fridges in anyway. Who wants to pay for a rental last minute when they've probably already bought their own?