I doubt if your IP would be bothered about your PayPal account anyway. You may need to be careful if you operate a business via Ebay and ensure you do not end up paying tax on the money.
I have a Paypal account into which payments go when I have sold anything, and I use that to fund my spending on there. As long as it's not a business, as Michael says, then if you choose to sell your unwanted belongings, it's not a problem.
I've never declared my account at all.
Sharing from experiences of dealing with debt
The greatness of a man is not in how much wealth he acquires, but in his integrity and his ability to affect those around him positively.
Bob Marley. http://kallis3.blogs.iva.co.uk