The quote "There's always a black market, there's always something that can be exchanged" from Margaret Atwood's novel "The Handmaid's Tale" emphasizes the persistent existence of underground economies, especially in oppressive societies. It reflects the human instinct to barter and find alternatives when legitimate means are restricted. This speaks to the resilience of individuals who navigate and survive in challenging environments where resources are limited or controlled.

In the context of the book, such exchanges illustrate the characters' struggles against a totalitarian regime that seeks to strip away freedom and autonomy. The black market serves as a symbol of rebellion and resourcefulness, showcasing how people adapt and find ways to maintain some semblance of agency. Atwood's work highlights the importance of these underground networks in providing support and hope to those living under oppressive conditions.