Chicken and Egg Razor Problem

I’ve been having this razor problem for a few months now. I don’t know about you but I’ve been to a few super markets with this same result.

Scenario 1: You can buy Gillette Mark 3 blades but no handles

I don’t own a Mark 3 handle. I don’t mind buying one but I can’t find one.

Scenario 2: You can buy Gillette Sensor 2 handles but no extra blades

I have a Sensor handle but no blades. :(

I’m using some disposables for the time being if anyone has a solution for this I’m eager to hear it :)