










The Michigan Supreme Court's landmark 4-3 decision fundamentally reshapes consumer protection enforcement in the state, directly impacting e-commerce sellers operating in Michigan or selling to Michigan residents. The court overturned two precedents (Smith v. Globe Life Insurance Company and Liss v. Lewiston-Richards Inc.) that had exempted licensed businesses from Michigan Consumer Protection Act (MCPA) enforcement, restoring Attorney General Dana Nessel's authority to investigate and prosecute deceptive practices and price gouging—including price disparities between branded and generic alternatives.
This decision creates immediate compliance implications for sellers across multiple categories. The case originated from Nessel's 2022 investigation into Eli Lilly's insulin pricing disparities, where the company faced scrutiny for price differences between branded injections and generic alternatives. While Eli Lilly emphasized its affordability initiatives (capping copayments at $35 monthly, reducing prices 70%, achieving sub-$15 average out-of-pocket costs in 2024), the court's ruling signals aggressive enforcement of pricing transparency standards. For e-commerce sellers, this means Michigan-based operations and cross-border sellers targeting Michigan consumers must now audit pricing practices across channels—Amazon, eBay, Shopify, and direct-to-consumer platforms—to ensure consistency and transparency.
The political momentum behind this decision amplifies enforcement risk. State Senator Sam Singh (D-East Lansing) is pushing Senate Bill 134 to further strengthen MCPA protections, suggesting additional regulations may follow within 6-12 months. The 4-3 Democratic majority opinion, authored by Justice Noah Hood, explicitly restored the AG's "former national prominence" in consumer protection, indicating Michigan may become a model for aggressive state-level enforcement. Sellers should expect increased scrutiny of: (1) price disparities between product variants, (2) promotional pricing transparency, (3) subscription cancellation practices, and (4) comparative product claims. Non-compliance penalties could include civil fines, corrective advertising requirements, and restitution to affected consumers—potentially costing sellers $50,000-$500,000+ depending on violation scope and consumer impact.