This paper investigates how political ideology influences a buyer's likelihood of negotiating prices, particularly in informal market settings like purchasing houses or used cars. Through both archival data analysis of real estate transactions and Google search trends, and controlled laboratory studies, the research demonstrates that conservative buyers exhibit a greater propensity to negotiate compared to their liberal counterparts. This difference is attributed to conservatives' stronger endorsement of free-market ideology, which is shown to mediate the relationship between political leaning and negotiation behavior. Furthermore, the studies suggest that conservatives tend to moralize the act of price negotiation and are more likely to negotiate regardless of the seller's identity or the potential outcome, supporting the notion that these behaviors are driven by ideological beliefs beyond simple economic gain. The findings highlight that marketplace actions are shaped by both economic considerations and deeply held ideological convictions.