Quick question about Xperia Z5 Compact

Hi everyone. I'm a Verizon customer who has a phone upgrade available. I would really like to get my hands on an Xperia Z5 Compact. I don't like how large smart phones have become, and Samsung/Motorola only offer really pared-down versions of their flagship phones. I like that the Xperia doesn't compromise on hardware even in a smaller phone.

Anyway, it looks like Verizon doesn't directly sell the Xperia line? For some reason the phones weren't showing up on the in-store database so I was unable to purchase the phone and apply my upgrade to it. Do I have to buy the phone directly from Sony and then take it in to Verizon? Is there any way I can apply my upgrade to this phone through Verizon? I really don't want to pay 500 dollars for this phone when I have an available upgrade. Why wouldn't Verizon be selling this phone?

Thanks in advance.