Pepe's price was fair in the market; premium age, Italian international, playing for a pretty good team. €10m is what I'd expect to pay. It's just the stupid market. Sure, it could have been better spent outside of this market, where you get more 'bang for your buck'. He's not particularly good, but €10m doesn't get you much when you target this sort of player.
The really stupid one is Martinez. Again, €8m-€12m in this market is the rate, but we bought a player with a poor injury record who didn't even fit our system.