The new condition Canon 24-105mm f4L IS USM EF lens goes for $1000 at authorized dealers, bundled with a handful of lens-y accessories, eg Adorama (filters, cleaning kit, tether, lens shade, Corel software bundle).
But if you want to pay almost half of that, you can get it in manufacturer refurbished condition with a 1-year warranty at the official Canon USA store for $540 with free standard US shipping. You can almost buy two for the price of one!
PS: I wonder how authorized dealers feel when the manufacturer undercuts them dramatically in price, while at the same time the manufacturer places strict restrictions on what prices authorized dealers can offer. Sounds -opoly-ish to me but I’m not an expert in this field, just a bloviator with a keyboard 🙂