Final answer:
There is no information provided in the provided excerpts that Alice buys anything from a shop as both excerpts describe different scenes; one about Alice stepping through a looking glass and the other about Amy trying on a dress.
Step-by-step explanation:
The question pertains to what Alice buys from the shop as depicted in a story. However, the excerpts provided describe Alice from 'Through the Looking Glass' by Lewis Carroll, where she steps through a mirror into another world, and a separate scene involving a character named Amy trying on a dress in a shop. There is no concrete evidence in the excerpts given that Alice buys anything from a shop.
Instead, the concept of a looking glass as a portal is emphasized in Lewis Carroll's story, and the imagery of a dress being tried on by Amy is highlighted in the second excerpt. The question seems to be a mix-up as it combines elements from two different scenarios.