Apple Refurbished? Unless you're looking for extremely cheap. As in used cheap. 

B&H.

$800 for a 3 year old device seems a little steep.

What capacity are you looking for? Apple has refurbs starting at $480

Looking for used? I would check flEabay.

Here look, a refurb 128GB 7 Plus for $570

https://www.apple.com/shop/product/FN492LL/A/Refurbished-iPhone-7-Plus-128GB-Silver?fnode=3bd95e9372c06a6f225742c913b9c40b84ed6c4ee3d159692b5badb965d534b5460fde628085c84d9ed21245259a75caad4bf2cf31dc829c75017eaa6387719a4407c3f8d43254839584a4fa0a8d4f16ea9e5e4ceb5996066d390494f410b452

@ARikozuM Yeah I've checked eBay but since Apple is so popular I'm a little leery...chance of getting something that's not legit or stolen is a lot higher.

@DrMacintosh I'm Canadian, so $570 works out to be almost $800. For something refurbished. It's ridiculous.

feelsbad.CAD

@DrMacintosh tbh I feel almost $600 is still too much in USD. So.

They are expensive. The Apple Give-back program is the only reason I replaced my 6s Plus. Apple gave me $250 for it. Brought the cost of my 8 Plus down to $449

@DrMacintosh I'm not surprised you're supporting it, but only a $300 discount on a refurbished, 3 year old item over something that's newer with better tech is fucking retarded.

I can’t help the Canadian economy

I would agree though, that the phone doesn’t justify that high of a price. 

@DrMacintosh It's the same ratio as the US pricing, but nice try.

Well I consider $449 for an iPhone 8 Plus to be a pretty good deal. Not sure if I could get something with better hardware for less or equal cost. 

@DrMacintosh Including the value of your trade in is rather misleading.