: Platforms like GovDeals list pallets of retired hardware from local governments, police departments, and universities. These are often sold "as-is" but can be extremely cheap for those willing to sort through them. Wholesale Lots - Discount Computer Depot
: Sites like Direct Liquidation and Liquidation.com host auctions for overstock or customer returns from giants like Amazon and Walmart. These lots can range from brand-new surplus to "salvage" units that require repair.
: Businesses often lease computers for 3 years and then return them. Specialists like Discount Computer Depot or System Liquidation sell these "business-class" machines in bundles of 5, 10, or 100+. These are often more durable than consumer-grade models.