Would you buy a pre owned phone?

Just like the refurbished phones that Apple sells, the pre owned ones are fully tested to ensure they are 100% functional and there is no issues with them. However, because they are pre owned they might have a few visual flaws and they are sold £100-£200 cheaper than a brand new one. Would you get one or would you spend the extra cash for a brand new one? I’m trying to save up for a new phone and I don’t know what to do