Around $1100 on just Amiibos. I own every Amiibo released here in the states so around 80 Amiibos including the 3 packs (each one comes with 3 Amiibos), Mega Yarn Yoshi ($40 by itself) and the 3 colored Yarn Yoshis which cost alittle more then a normal amiibo.
Yeah it has been a costly hobby D: