The checkout guides cover what happens after you have picked a model: the warranty you get, how returns and cancellations work, whether a published discount applies, and whether a refurbished unit is a sensible way to save money.
Fill in the printer worksheet first so you have the model, price and delivery details in one place. Then read the warranty comparison and the refund and cancellation guide, because those terms decide how much risk you carry if the printer arrives faulty or does not suit you. Read the discount and refurbished guides last; they only list offers and stores the vendors publish themselves.
If you are unsure about buying from a brand's own store, the company background guide sets out its documented history and official store policies with sources.