It might be early, but Black Friday desktop PC deals have begun. Some retailers have already launched early deals on everything from home office computers to gaming PCs to all-in-ones. What’s more, many retailers are offering price protection so you can make your purchase now and rest assured you’ll end up with the best price.

The vast majority of Black Friday offers are cheaper or the same price at other times of the year, consumer group Which? has warned. We've spoken to some experts who have shared t