Actually, no it isn't tikka. I know she's not skint because she has no kids (so baking fresh Boxing Day would be no trouble either, we didn't see her till lunchtime) and she lives with my mother, she is totally bankrolled by her, I've posted bits and pieces about their weird dynamic and my charming mother on here before.
This is exactly the sort of thing she would do to piss me off, give me something totally crappy and smile about it, and quite frankly she'll be getting the same next year, as I have to give her something or my mum will go off on one at me slighting her favourite. No that's really not the spirit of Christmas, but I don't care, it'll make me feel better knowing I've given as good as I've got.
Someone gave me a deliberate, crap present, I'm well aware they did as it's my bloody sister, not yours. Why are you so keen to defend her honour and paint me as grabby?
At no point in my post did I moan it wasn't of equal value to mine, you have inflected a meaning that isn't there. I moaned because I had spent £30 on her, getting her something she asked for, and basically got nothing in return. If she had spent a few quid or some thought on it, that would have been better. As it is she spent no effort, no money.
If the biscuits had been edible (and maybe with a few more ingredients as I still can't get over the fact that they were plain, she's a great cook, plus lives at my mums so she didn't pay for ingredients anyway!) given by a sister who isn't a spiteful cow sometimes,and that's what she's given my other sister too; then I would have loved it. As I said myself previously I often give biscuits/cake away as random gifts, if you can make your own gifts then why not? Good for you.
All these things point to a statement, there really is no excusing it.