Anyone can chuck a £50-100m here and there on a one off basis, it really isn't that hard with the money coming in to PL clubs.
Over the last 3 seasons West Ham's net spend was 90m vs our 60m. Doesn't look great.
On the other hand we've spent roughly £300m more than them on wages in the same period. This is a far more realistic measure of the level of spending from a club, and we blow 75% of the league out of the water when it comes to that. So yeah, West Ham are not really breaking their backs buy making these signings as long as they can keep their wage bill at a sustainable level.