As TARDISes go, it's a pretty good representation. Nicely proportioned and has all the usual features. In fact if you didn't want to store cookies inside, it would double as a decent scale model of the TARDIS. This isn't the TARDIS of the current Eleventh Doctor. It appears to be that of the Ninth and Tenth Doctors, since it's lacking the St. John Ambulance badge on the right-hand door.
One minor complaint: They cheaped out on the paint applications and didn't paint the handle and lock on the door. A few minutes with a brush and some silver paint would remedy that, but for the price I shouldn't have to do their touch up work.
As a cookie jar I suppose its adequate. It's constructed of plastic, not ceramic, so don't be too rough with it during snack time. It's not terribly spacious inside so if you do use it as a cookie jar, you'll have to fill it with small diameter cookies. Ironic, considering the TARDIS is supposed to be bigger on the inside than the outside, eh?
There's actually a removable inner container inside which holds the cookies. When it's dirty, you remove the container to wash it, so you don't have to dunk the entire TARDIS in the sink and fry its electronics.
Yep, this is an electronic cookie jar. Lift the lid and close it and you'll hear the characteristic TARDIS dematerialization sound, as the blue light on top flashes on and off. There's no off switch, so it's gonna sound off and alert the whole household every time you cheat on your diet.
All in all, a decent addition to your cookie jar collection, or your Who collection in general.I don't have one, but I noticed that there's also a TARDIS ice bucket for sale. It looks suspiciously like the cookie jar to me. Beware if you're thinking of buying one, however. It's the same price as the cookie jar, but is sans electronics, presumably to avoid them getting soaked by melting ice.