Chelsea have the striker they really wanted, and Diego Costa showed exactly what he is capable of with a superb brace on his home debut.
The €40 million signing from Atletico Madrid scored two goals in the opening 10 minutes, illustrating he is back on form and full fitness after an injury plagued end to the season in La Liga.
Jose Mourinho admitted after the game that Costa was his number one priority in the summer, and he believes the price paid for his services is a bargain.
He told Chelsea's website: "This is the player we bought and we were waiting for since last season. This is why we didn’t buy a striker in the winter market. We were waiting for him, we have him and hopefully everything goes well.
"You can consider that [a bargain] because the market is crazy and the values are very high. For a striker like him, a champion in Spain, a Champions League finalist, a 25-year-old, we consider the price was very much in our favour."
Mourinho is right, in that Edinson Cavani cost PSG €64 million last summer, and Barcelona paid in the region of €90 million for Luis Suarez.
Chelsea were able to get away with this due to a release clause in Diego Costa's contract, which landed up working in their favour, rather than put them off, as they are often designed to do.
The club's gamble to wait on Costa may just work this season, but if they had bought in a striker in January, in addition to signing Costa this summer, they may be reigning Premier League champions, narrowly missing out on the title instead.