I know right?! Probably one of the coolest amiibos I've seen from Nintendo. Have you seen the giant yarn Yoshi? Almost big enough to snuggle, haha. A bit expensive now though.
https://www.amazon.com/Green-Yarn-Big-Yoshi-Amiibo-Nintendo/dp/B016XIA2FK
Do you mind importing? If so, he's up on Amazon.jp (you need a forwarding service like Tenso though).
Play-Asia is usually one of the most expensive, they don't require Tenso. I just got my JPN ROB in the mail yesterday from AmiAmi. They're the best site to import from hands down.
Amazon Japan has it for Y3711 which is about $40.33CDN, buy the time you add in Tenso and Shipping I think someone said it works out to about $55-$60ish, which is basically you saving the tax.
Then again, there's a chance customs could catch it and add more duties and taxes.
It's always a possibility, but the only one that knows is Nintendo. Mega Yarn Yoshi was released on November 15th, about two months ago. It took Nintendo an entire year to restock Villager, but it finally happened. So it could be restocked soon, or a very long time from now. If you don't want to wait, you can always look into importing him from Australia, United Kingdom, Japan, or Europe.
BTB ($52 USD with shipping) : https://www.beatthebomb.com.au/accessories/wii_u/green_mega_yarn_yoshi_amiibo
Amazon ($53 USD with Prime) : http://www.amazon.com/Green-Yarn-Big-Yoshi-Amiibo-Woolly/dp/B016XIA2FK
MSRP: $40 USD. So right now its costing an extra $12~$13 USD due to shipping costs of oversea shipping.
I don't know the specifics, but here's the Amazon page, still not taken down.
They are still being sold by Amazon Japan for 3711 yen. No need to go to ebay
Well there's still this one, just need tenso forwarding
I ordered mine on Amazon Japan for $30.08 Here's the link...but of course you need tenso http://www.amazon.co.jp/dp/B016XIA2FK/ref=pe_492632_159100282_TE_item