Background: Chargemasters are lists of all services offered by a hospital and their associated cost. This study analyzes chargemaster data to determine price differences among different hospitals for total joint arthroplasty. Methods: In May 2020, the chargemaster data for highly rated orthopaedic hospitals were accessed, and the diagnostic-related group (DRG) codes related to primary and revision total joint arthroplasty were analyzed (DRGs 466, 467, 468, 469, and 470). The prices listed for each hospital were averaged, and descriptive statistics were calculated. Furthermore, Medicare reimbursement was collected. A subanalysis was performed to determine relationships between geographic and demographic information. Results: The median price for a major hip or knee joint arthroplasty without complications was $68,016 (range: $39,927 to $195,264). The median price of a revision of hip or knee arthroplasty without complications was $90,966 (range: $58,967 to $247,715). The cost of living in the city in which the hospitals are located was weakly correlated with procedure pricing, whereas the median income had no notable relationship to chargemaster pricing. Conclusion: The published cost of DRG codes in arthroplasty is widely variable among the top 20 US orthopaedic hospitals, with little correlation to the cost of living or median income of the area.