Ive found this website that have Electric Tart warmers, there between £22.99 -£26.99. £3 P&P per order mayb worth a look
http://www.rhyscandles.co.uk/accessories_page_1.html
Fantastic link for electric burners, Autumn, thank you. As mentioned above it looks as if the tops come off but not mentioned in blurb so I just rang them and the lady I spoke to me told me they DO come off. Also, I queried about the paypal situation as I do not use that and she told me you go through paypal but can use your credit card. If that is problematical, you can just phone your order to the shop and pay by card then.
I think the OTO is really great value, especially as there are 2 brand new and 3 quite new fragrances in the set. I have too many to go for them, but I plan to get a warmer once I have paid for the decorating I am currently having done which is not exactly cheap!!!!! Have added the website to my favourites for when I am back in funds!!!!!!