Got Toad in the mail and he looks great. I tried to get the Gold Mario at Walmart, but they completely failed - I was there at 11:45 Thursday night, and the guy working in electronics said they never got them in, and sent me to a nearby Walmart. That one sold all of theirs out at midnight and said that the first Walmart must have been lying because they got 8 in. So I don't know if they legitimately didn't get them, were too lazy to find them, or if they sold them earlier in the day.
Oh well, maybe I can get one someday if I don't mind forking over more money. As for the others, I'm really going to wait and see. I strongly suspect that all the Super Mario amiibo except Toad will be around for a LONG time. Considering that their Smash Bros counterparts are so easy to find, and Nintendo is going to want those main Mario characters around for a while, and I imagine the Smash Bros versions will be phased out. Besides, I'm still leaning towards drawing the line at getting the Smash Bros amiibo and any other unique ones that I like. I have no intention of being a completist on these things.