I'm not disputing that. But we paid 42 for Mangala, 100 for Grealish, 41 for Ake (4th choice centre back) and the club wonders why Brighton are sticking to a valuation of 50 on Cucurella. He's worth that in today's market. He's brilliant defensively and offensively - granted he's had one good season at Brighton I'd stick my neck out and say he will be as good as Robertson at Liverpool in a few seasons. Few people will disagree with me, but there are very few left backs who are brilliant at both, and he's one of them. They come at a Premium.
One of my best mates is a Brighton fan, and I watched nearly all their games last season when I could. He was superb in nearly every game. Suits our style so well.
However, I do trust the club that they will get it right eventually. Sosa would be a superb alternative.