Hello Kitty Mini Cupcake Cases

I am a professional cake maker so have tried lots of different cupcake cases. These are more expensive than I usually buy, but I bought them as a treat for my 4 year old daughter who loves Hello Kitty and wanted to bake with Mum. I'm really disappointed to find that these are the kind of cases that allow the oils from the cake to 'seep' through the paper, making them greasy to handle after baking, and spoiling the colour/design too. Expected more for this price - these were equivalent of 'cheapies' I've bought for the kids in pound shops! Such a shame as they are such sweet designs!