If you think about it, Suarez is worth £50 million. Why?
Well qualifying for the Champions league getting through the group stages and in to the quaters is worth around £20-£25 million alone.
But we've done that every year for 14 years or whatever without spending 50mil, we might qualify without him but find if we buy him and spend the 50mil that he gets sent off in the game and we go out and lose 25mil. Those kinds of things are irrelevant, its like the "Ronaldo paid back his fee in his first year" BS, no the team signed a new sponsorship deal... THEY WOULD HAVE ANYWAY. Their revenue didn't increase 80mil, neither did their profits, he categorically did not pay back 80mil in his first season.
IF we buy Suarez and make it through the qualification Suarez would NOT be the reason for doing so, even if he scored 3 goals the team got into 4th without him, got the chance without him and no player plays and wins alone. Just because he might score 3, doesn't mean we wouldn't win with someone else on the pitch. Fact is I'd be surprised if we didn't make it through with the current team.
I'll again point out that LIverpool haven't improved since Suarez has been there, they haven't improved in the league, got into Europe nor was their record worse when he didn't play, it was in fact better.
Being a great individual player doesn't equate to directly improving a team. Many brilliant individuals make a team overall worse(particularly when a player is very selfish and costs his teams results taking on stupid chances rather than making the right choices). Liverpool dominated and created dozens of chances in the 9 games they lost, Suarez fluffed 52 shots without a goal in those 9 losses. I haven't seen Suarez make a noticeable difference on Liverpools results, as such why anyone believes he's worth so much I don't know.