Buying a New Kindle Paperwhite

Hi

I've got a birthday coming up and I am thinking of getting a new Kindle PW. i was hoping there would be a January sale on after Christmas and I could get one cheaper than the usual recommended price but that didn't happen.

At the moment the cheapest price I've seen in the UK is for the Kids version at £139.99 from Amazon themselves. However I haven't been able to find out many differences between the standard PW and the Kids version. Is there a restriction on adult book content or anything else stopping me use kids version as a normal ebook reader?

Thanks.