You were selling a physical item that was perfectly allowed and they froze your money because they didn't like it... How is that not illegal?
The law (If you could decide which country had juristiction) has almost nothing to do with it, Paypal T&C's that you must accept to join, allow them to do pretty much anything they want. They are absolutely notorious for closing down on a whim, and then not giving you any due process. I had a business selling computer equipment that they froze, and to this day i've had no reason or recourse. Will NEVER use/trust them or eBay (same company) again.