We found 15 Reddit comments about Persona 5 Original Soundtrack. Here are the top ones, ranked by their Reddit score.
Support Meguro-san and buy the soundtrack?
iTunes | Amazon | CDJapan
Or just download it off the internet, I guess...
I'm just gonna leave this here...
Persona 5 Original Soundtrack https://www.amazon.com/dp/B01N1HXZLI/ref=cm_sw_r_cp_apa_i_Sd8ADb2WJ6AY4
I'll just leave this here
If you want the actual CDs, Amazon has them - Amazon.co.jp & CD Japan also have them for slightly cheaper, but I bought it off of Amazon so I wouldn't have to wait several weeks for delivery. (https://www.amazon.com/gp/product/B01N1HXZLI). Otherwise, you can get it on Itunes (https://itunes.apple.com/us/album/persona-5-original-soundtrack/1226945984).
It's available on Amazon. It's literally the first result on Google.
I highly recommend ordering from Amazon Japan. I live on the west coast (US) and regularly get my orders two days after placing them. I believe there's a link on every page for an English version of the site.
Edit: Wow, it's actually sold out right now. Apparently it was #1 on Oricon daily at release.
It's the official OST, 3 discs. Bought from Amazon
The soundtrack is available on Amazon if you want : Amazon US. Seriously the packaging and CDs are sexy, I don't regret buying physical. Just sad that I can't read the booklet as it is in Japanese, there's commentary on certain tracks. Maybe in 10 years when I'll know enough Japanese.
If anyone is interested you can get the physical discs here
[It's on Amazon.co.uk for nearly £60, and is frequently out of stock there.]
You can also find it for about £40 on otaku.co.uk.
But these are both CD. There doesn't seem to be any legal route to get it in the UK digitally.