A used DSLR is often a better deal than a cheap new one when still-image quality, viewfinder shooting, and lens choice matter more than modern video or wireless features. Roughly £130-£430 can buy an older enthusiast APS-C body or an early full-frame model with stronger controls and construction than a new entry-level camera, while new basic bodies and kits are more commonly around £400-£900.
The trade-off is condition and support. Check the shutter count against the model’s expected life, inspect the sensor and lens mount, test every autofocus point, dial, card slot, flash, and connection, and confirm that the battery holds charge; a worn shutter, failing stabilization unit, or damaged LCD can erase the saving. Also verify that RAW files are supported by your current software and that compatible batteries and repairs remain available.
Buy new when a warranty, predictable condition, current software compatibility, or a complete kit matters most. Buy used when the seller permits thorough testing or returns and the lower body cost leaves room for a better lens, because a sound older body with a sharp stabilized lens is often more useful than the newest basic body with the weakest kit zoom.