Reddit mentions of Shelter the Complete Edition

It's still available at Amazon JP, that's where I ordered mine. They ship to the US.
https://www.amazon.co.jp/dp/B01MRX9NOW

You can buy the whole CD + Blu-ray + Flag package for 2437 yen (~$22 USD) plus however much shipping is from Japan. Probably like 10 bucks or so usually. https://www.amazon.co.jp/%E3%82%B7%E3%82%A7%E3%83%AB%E3%82%BF%E3%83%BC-%E3%82%B3%E3%83%B3%E3%83%97%E3%83%AA%E3%83%BC%E3%83%88-%E3%82%A8%E3%83%87%E3%82%A3%E3%82%B7%E3%83%A7%E3%83%B3-%E5%AE%8C%E5%85%A8%E7%94%9F%E7%94%A3%E9%99%90%E5%AE%9A%E7%9B%A4-Blu-ray-Disc%E4%BB%98/dp/B01MRX9NOW/ref=pd_sim_15_1?_encoding=UTF8&psc=1&refRID=GVF9W6M95T0JCQJC9HFN (Click on the globe to change languages)

Or wait for it to come back in stock on the Amazon US site ($36.15): https://www.amazon.com/gp/product/B01MRX9NOW/ref=ox_sc_sfl_title_2?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

Additionally, check this link regarding badges: http://www.sonymusic.co.jp/artist/porterrobinson_madeon/info/477386

HMV and Amazon JP appear to be out of badges. Tower JP and animate may or may not have badges.

Shelter: Mini Album (Ltd Cd/Bd) https://www.amazon.com/dp/B01MRX9NOW/ref=cm_sw_r_cp_api_BXHOybDC5JB3X

this one? or the japan release

This amazon.co.jp listing seems to be still up, and delivers to the US. The other listing on there is from what I've just learned the only one with the incredibly cute Rin badge, so that one will never restock.

I learned this the hard way, having pre-ordered the wrong link :(

Feb 15th
https://www.amazon.co.jp/dp/B01MRX9NOW

https://www.amazon.com/Shelter-Mini-Album-Ltd-Cd/dp/B01MRX9NOW
This is probably the closest we'll get to a Shelter "album". I actually ordered this in July and shipping got delayed in early August, but I'm pretty sure it's a Japan-region exclusive so I sort of expected it to take a while to ship.
e: also I don't think the Blu-ray works in the US.

Sure.

bought it from here: https://www.amazon.co.jp/%E3%82%B7%E3%82%A7%E3%83%AB%E3%82%BF%E3%83%BC-%E3%82%B3%E3%83%B3%E3%83%97%E3%83%AA%E3%83%BC%E3%83%88-%E3%82%A8%E3%83%87%E3%82%A3%E3%82%B7%E3%83%A7%E3%83%B3-%E5%AE%8C%E5%85%A8%E7%94%9F%E7%94%A3%E9%99%90%E5%AE%9A%E7%9B%A4-Blu-ray-Disc%E4%BB%98/dp/B01MRX9NOW/ref=sr_1_2?ie=UTF8&qid=1487104512&sr=8-2&keywords=shelter+porter+robinson

Do you know if pre-ordering from this english link on amazon's U.S. site would include the Rin badge pin? Or must it be ordered from Amazon.co.jp?

https://www.amazon.com/Shelter-Mini-Album-Ltd-Cd/dp/B01MRX9NOW/ref=sr_1_3?s=music&ie=UTF8&qid=1487104612&sr=1-3&keywords=porter+robinson

I think it might be different, no guarantee though. I think the following is the one with the cute Rin badge: https://www.amazon.co.jp/dp/B01LTI20T0/ref=cm_sw_r_cp_ep_dp_8T3DybNE28WXE

Amazon.co.jp also has the following: https://www.amazon.co.jp/Blu-ray-Disc/dp/B01MRX9NOW/ref=oosr, which is the same ASIN, B01MRX9NOW, as the one you posted on amazon.com. This one might not come with the Rin badge?

Porter Robinson and Madeon - Shelter: The Complete Edition (Japan Exclusive)

It's pretty much just a greatest hits collection of two EDM artists (Porter Robinson, Madeon) that was released in Japan as a celebration of them doing a collaborative song and tour together.

My girlfriend picked it up for me when it first released for about $30 USD but now it's super expensive.

discogs, amazon