You're comparing a team that's baseline spend per player is £40m.
With one who's baseline is £18m.
But looking at spend trends we should be getting more return on investment and Potter should be demanding it.
Last window:
West Ham: £540,000
Expenditure: £19.98m
Income: £20.52m
Albion: -£2.61m
Expenditure: £21.15m
Income: £18.54m
See below. Total spend and net spend for past 5 years.
1 Manchester City £505.6 M £101.1 M
2 Manchester United £378.9 M £75.8 M
4 Chelsea £133.2 M £26.6 M
3 Everton £275.0 M £55.0 M
5 Arsenal £249.0 M £49.8 M
6 Brighton & Hove Albion £197.4 M £39.5 M
7 Liverpool £92.4 M £18.5 M
8 AFC Bournemouth £133.4 M £26.7 M
9 West Ham £155.7 M £31.1 M
14 Wolverhampton Wanderers £184.8 M £37.0 M
10 Leicester £112.6 M £22.5 M
11 Crystal Palace £56.2 M £11.2 M
15 Watford £95.2 M £19.0 M
12 Newcastle United £107.5 M £21.5 M
15 Aston Villa £198.1 M £39.6 M
16 Burnley £52.5 M £10.5 M
17 Tottenham £94.6 M £18.9 M
18 Sheffield United £40.3 M £08.1 M
19 Southampton -£02.8 M -£00.6 M
20 Norwich City -£46.8 M -£09.4 M
I'd suggest that the club are more interested in breeding and selling racehorses than actually racing them.