I was really looking at something used to save some ching. I missed your GB so the cheapest is the AWR from PG. They still have the mazdas247 discount code working so shipped price ends up being $162.
Other than price, I have a couple concerns with your mount, the biggest being the vertical orientation of the bolt and bushing. Why did you choose to retain the stock orientation of the bolt and bushing? What does that bolt look like on the other side of the bottom mount? Big washer and a nut? I couldn't find a picture of that anywhere.
I chose the vertical orientation because the typical horizontal after market config allows for the engine to pivot way too much defeating the purpose. All the horizontal mounts I've seen have shown significant wear in the bushings as well. Yes, big bolt, big washers, big nut.