There's actually two or three you can get! I had a really fancy one last year, Ronnefeldt, I think? Cost about £25 including P&P, but had twenty five different, loose leaf teas (all 'proper' tea, no herbal ones), with enough for two/three cups per sachet. It was awesome. This year I couldn't really afford to splash out that much, but I did find a cute one that was £10 for two. Thirteen different flavours, in teabags (so only one cup and repeat flavours), but for the price it's really nice! I like the size too; last year's one was HUUUUGE and I had a tiny bedroom in a shared house. This year I could actually store such a big calendar properly but the one I have is dinky, so it fits well against the kettle. I think it's English Tea House?
Also, yay for packages! =) I love receiving post from my international friends. ^_^