An SEC filing reveals that Sony paid a relatively low $229 million to acquire Marvel's Spider-Man developer Insomniac Games.
Spider-Man PS4 Is Sony's Fastest-Selling First-Party Game - IGN News
The Future of Spider-Man: Marvel vs Sony and the Battle for Direction: Unlocking the Spider-Verse
Marvel's Spider-Man 2 review: Everything everywhere all at once
Marvel's Spider-Man 2 review: Everything everywhere all at once
Stuff UK - November 2016, PDF, Ios 8
Insomniac Pressured by Sony to make budget cuts despite the success of Spider-Man 2 : r/TwoBestFriendsPlay
Sony's $229 Million Splurge Is Small Change For PS4's Spider-Man
Spider-Man: Across the Spider-Verse' Crosses $500 Million Globally
Spider-Man 4: Sony confirms Spider-Man 4 amidst writers' strike, drops hints for Spider-Woman film - The Economic Times
Stuff_UK_July_2017
Sony Paid $229 Million for 'Spider-Man' Game Studio, New Filing Reveals