On the printer point, I once bought a 3rd-party cartridge for a Dell laser printer that not only didn't work but actually broke the printer (it stopped recognis

On the printer point, I once bought a 3rd-party cartridge for a Dell laser printer that not only didn't work but actually broke the printer (it stopped recognising all cartridges in that slot). The first question they asked on the phone was whether I'd used a 3rd-party cartridge. I said yes. The second question was where I'd like the free replacement printer delivered (now with added WiFi, and a full set of cartridges). Painful for Dell, but I'll buy from them again.