Amazon.com has Kirby Series Amiibo on sale. Shipping is free w/ Prime or on orders $49 or more.

Note, all of these should be compatible w/ Super Smash (except Waddle Dee; not in game). Prices might fluctuate slightly.

• King Dedede Amiibo $7.49 -> now $7.18
• Waddle Dee Amiibo $7.49 -> now $7.15