Just file a Paypal dispute and mail it back when Paypal directs you too. You will be out the return shipping fee.
Even if the item was fully functional and you actually did break it, Paypal will side you with anyways.
Reasons like this are why I never sell anything on eBay.
Yeah I'll probably do that. Not a fan of returning anything. Just now I have to deal with packing up, shipping off, paying for the shipping and then wait for weeks to get the money refunded by ebay if I get it. Ugh.