The demand for amiibo figures has certainly shown no signs of waning, with pre-orders for the next few waves of figures going up and then selling out within days. As of writing, Amazon is still accepting orders for Luigi and Zelda, but all other Wave 2 figures appear to be sold out completely.
No official explanation has come down the line regarding which amiibo will be discontinued from Wave 1 and beyond, causing prices of online auctions to skyrocket. If demand continues this way, we’ll probably continue to see this.
If you have your eye on a particular amiibo, we recommend attempting a pre-order as soon as possible.