It is the same scope, just one place is selling it for less than the other. When I just typed this I realized that you are probably like my mother and do not understand how Amazon works. Not much if anything at all on Amazon is actually sold by Amazon but sold through Amazon so to speak. Its kinda like eBay but not like eBay.
I copied this from the Interwebs.
Order Fulfillment
Once a customer submits his order, Amazon's impressive backend system starts working. Orders from third-party sellers are routed to Amazon, which takes a cut of those sales. However, most orders go through Amazon's warehouses, which are spread out across the world. These are stocked based on algorithms that predict the types and number of products being ordered in that region.