@Ozzlebert Its better to think of it as % which is more of a true measure
20p on 10 £10 players and 2p on a 100 £1 players is 2% the same.
So of you sell a £10 player for £11 and a £1 player for £1.10 you still made a 10% ROI either way.
I do understand your point and flipping high priced players is something we should only do if we are confident in a decent rise. Ronaldo and Salah both seen 60p plus rises in the matter of 24-48 hours in the last week so its possible