I think 'about' should be changed to ~ (approximately) because the current phrasing sounds like you're saying, "give or take $100M" like it's nothin' I'd prefe

I think 'about' should be changed to ~ (approximately) because the current phrasing sounds like you're saying, "give or take $100M" like it's nothin' I'd prefer to see Staples Agrees to Buy Office Depot for ~$6.3 Billion to Staples Agrees to Buy Office Depot for About $6.3 Billion