The best source for refurb (and discounted) iPhone 13 deals in general is Back Market. This site not only has a wide range of stock at great prices but you'll also get one full year of warranty ...

For the latest price quotes for your specific model ... the latest Apple trade-in deals when you're ready to sell your used iPhone, iPad, Apple Watch, or Mac computer. Apple's new Mac mini ...

It'll still be available both brand new and refurbished from third-part retailers though, so keep that price in mind as you go hunting for offers. When new, the iPhone 13 cost $799, the same price ...