Even though City Super carries a lot of great products, their prices aren't fantastic. But they do introduce new products regularly, and once in awhile, these products go on sale...
If you REALLY don't have time to make your own cookies from scratch, just do the easy thing and buy them this way...all you have to do is slice and bake, and you're all set! NT$240 each. (too expensive, in my book) You can get decent cookie mixes from Costco for a much better price.
City Super also carries Olivio spreads. NT$150 each.
And don't forget the Starbucks Dark Chocolate Peppermint Mocha...if you can afford NT$80/ can.