For single cards:
#54: Chandra, Fire of Kaladesh
#78: Sword of the Animist
#84: Liliana, Heretical Healer
#87: Ob Nixilis, Unshackled
The new Chandra continues to get plenty of love on Amazon. Sword of the Animist is a great card seeing Standard play and is fantastic in Commander. Liliana is continuing to sell very well, too, especially since working her way into the Abzan Rally decks that didn’t perform all so well at the Pro Tour, but continue to appear at Friday Night Magic Events. Ob Nixilis, Unshackled is an awesome card in Commander, and mono-black is as popular as ever. With Amazon getting bought out quickly, we may be seeing a rise in his price soon enough.
As for the miscategorized cards in the Decks & Sets
#14 Colossus of Akros
#19 Ajani, Mentor of Heroes
#26 Erebos, God of the Dead
#27 Nylea, God of the Hunt
#33 Ghostfire Blade
#43 Vraska the Unseen
#45 Mogis, God of Slaughter
#51 Bow of Nylea
#52 Whip of Erebos
#67 Xenagos the Reveler
#68 Hardened Scales
#69 Gift of Immortality
#74 Thassa, God of the Sea
#75 Heliod, God of the Sun
#78 Darksteel Forge
#79 Phalanx Leader
#87 Athreos, God of Passage
#88 Cyclonic Rift
#90 Kruphix, God of Horizons
#97 Prophet of Kruphix
#100 Sylvan Caryatid
The Colossus seems to perpetually lead sales. Ajani has moved up a few spots today. The Theros Gods continue to sell well. Ghostfire Blade is still a really hot card, too. Vraska appears on these top lists every so often because she’s actually quite underrated because she doesn’t do much in Modern. Bow and Whip will probably be on this list for a long time. Godsend has appeared on this list before and the casual favorite equipment is still selling well. Xenagos the Reveler is a really good planeswalker, and he’s about as cheap as he’s going to get, currently.
Hardened Scales is an interesting card, that combos very well with Managorger Hydra, since it will gain 2 +1/+1 counters for each spell cast rather than just one. But it also seems to be used in some Heroic strategies. Phalanx Leader, in particular, is selling well now, too. The Leader and Hardened Scales definitely go well together. Giving everyone 2 counters instead of one seems fun. Gift of Immortality is a casual favorite getting some love today. Darksteel Forge is here, as usual.
Athreos and Kruphix aren’t as popular as the others, but in Commander they’re both quite useful. Athreos in particular is a casual favorite who just never really broke into Standard. Prophet of Kruphix always sells well, but it’s further down the list than usual. Sylvan Caryatid is a great mana ramp creature, but it’s probably not going to see much play outside of Standard.
Now as for the actual decks and sets that are selling:
#1 M16 Deck Builders Toolkit - These always sell well no matter what.
#6 M16 Clash Pack - Windswept Heath and Collected Company make this worth the purchase. Alt art foil Siege Rhino and Sandsteppe Citadel help the cause.
#10 Duel Deck: Elspeth VS Kiora - Bought for the planeswalkers. Kiora has fallen out of favor in Standard, but she’s still good. Elspeth, Sun’s Champion is still a Standard all-star
#15 Dragons of Tarkir Fat Pack - It’s a very popular set.
#22 Fate Reforged Fat Pack - Not the best EV of the Tarkir sets, but it still sells since it’s a Standard set that will be in for awhile.
#23 Duel Decks Speed vs Cunning - Worth the $13.99 you see them selling for these days just between a few rares in the decks. Alt art foil Arcanis the Omnipotent should be worth a lot more than $2.
#39 M16 Intro Packs - Set of 5 - That’s 10 packs of Magic Origins and a couple of those alt art foils are highly sought after - Pia and Kiran Nalaar and Kothophed, Soul Hoarder are both seeing considerable Commander play. Dwynen, Gilf-Leaf Daen’s foil is a good buy, too.
#49 Khans of Tarkir Holiday Box - These are a good deal now for the 4 packs, but apparently the quality of the card box they give you isn’t quite as good as past incarnations.
#55 Gatecrash Booster Box - Wow these are around $70-75 on Amazon. There are shock lands in this set, you know.
#56 Magic 2015 Booster Box - Plenty of relevant cards in the set.
#57 Fate Reforged Booster Box - Still plenty of this set to go around.
#83 M16 Intro Pack - Demonic Deals - Kothophed headlines this deck, and people want his alt art foil for Commander.
#93 M16 Intro Pack - Hunting Pack - This one has the Dwynen foil, and is probably the strongest of the Intro Packs
Some interesting trends to see here. Apparently, Wizards did a great thing by making the Intro Pack foils alternate art, and Legendary Creatures to boot. I’m sure Assemble Victory will sell more in the future, because the alt art Pia and Kiran Nalaar is pretty sick.