Lampshade...

I have an old IKEA lamp with a plastic lampshade that broke yesterday. The shade, not the lamp. I'd like to get another shade for it, the kind that fits right over the lampshade.

Any idea where I should go? Ideally, I'd like a lampshade like this one from IKEA:



...But IKEA is rather far to go, and I don't think they sell that lampshade separately: I'd have to buy the whole lamp. Which, I gripe to note, is $19.99 in the U.S. and $49.99 in Canada even though our money is close to being at par and the thing comes from Sweden. How does that make sense? This is, I see, available at my local store. Just to torment me.

I'll settle for anything that isn't heartbreakingly ugly. Normally I'd go to Zeller's but they're gone (or almost gone? - is there anything left of Zeller's at Billings Bridge?) - and Target doesn't exist yet.

Suggestions?