Wow. That diorama is amazing! I wish I had the patience to put something like that together. Very, very well done!
Also, I don't know if anyone is still looking for the HMR Monster, but Jungle Toys has one for ¥17,280. If you haven't used them before, they do charge a 5% on top of the price for international customers (if I remember correctly, it's been a while since I ordered from them) so factor that into whether it's a good deal for you or not. I wish I had the cash to grab a third one, but I am way overspent for the next couple of months. Ah, collecting!