Which PS4 is sold out besides the gold? I looked and they appear to be in stock. 

Crash is available now.

Uncharted  4 bundel ps4( the primary  ps4) 

Its only  being  sold by resellers just like  switch.

What am I missing? On the page for that bundle, it says "prime", "in stock", and "ships from and sold by Amazon.com."

It keeps going out of stock, then they have stock again, then they're out again and so on

Wonder how long Crash Bandicoot can stay top20.

Oh haha that would explain it. I checked a couple times throughout the day and it kept saying in stock, hence my wondering. It does seem like Amazon has stock issues more than any other major seller.

14 hours since last update:

HARDWARE:
#19 NS Neon (same)
#20 PS4 UC4 (up 1)
#35 NS Grey (up 5)
#55 PS4 Pro (down 4)
#77 NES (down 7)
#78 PS4 + UC4 (re-entry)
#94 XB1 Gears (down 2)
#99 PS4 COD (down 17)

SOFTWARE (Pre-orders Only) **:
#14 NS Splatoon 2 (same)

Does not affect this month: *
Software outside of the month only gets added if it's in the top 20: **

PS4: 4 in the top 100 / 2 in the top 50 / 1 in the top 20 / 0 in the top 10 / 0 in the top 5
XB1: 1 in the top 100 / 0 in the top 50 / 0 in the top 20 / 0 in the top 10 / 0 in the top 5
NIS:  2 in the top 100 / 2 in the top 50 / 1 in the top 20 / 0 in the top 10 / 0 in the top 5

i would rather them not so a Horizon bundle yet, it's still selling well on it's own. Only a couple of months away from them being able to use Destiny 2, which is a bit more expensive for them obviously, but is a better seller. Then you have CoD and Battlefront.

Save Horizon for Black Friday imo, if they even need to bundle it at all

Is there not going to be a PS4 Destiny 2 bundle? It should have been announced by now to gather pre orders. For the first Destiny Sony announced a bundle at E3. They better not be letting all these marketing deals they have go to waste