Liverpool have excelled in the transfer market in recent years, buying top class players and recouping good fees for unwanted players.
In 2018, the £146million received from the sale of Philippe Coutinho to Barcelona was reinvested in Van Dijk, Allison, Xherdan Shaqiri and Fabinho.
And all four players have made an impact for Liverpool, helping them to the top of the Premier League table.
Liverpool have been linked with moves for the likes of Timo Werner this month but Klopp has expressed his content with the squad he has.
However, the Liverpool boss says Neymar’s transfer record £200m move to Paris Saint Germain “changed the world” of transfers.
Klopp told Sky Sports: “We cannot do that constantly [spending big on players] and we will not do that constantly.
“The good thing was that, like most things in life, the timing was important. We had the money and the players were on the market.
“We didn’t know exactly when Alisson was on the market and when it was clear that he was, we had to, even if we had to collect money somewhere.
“With the Neymar transfer, the whole world changed. Could I have expected someone would have made the move from Barcelona to PSG for that money? No.
“But then, we had a bit of that money because of Phil [Coutinho] so what do we do? We don’t build houses, we invest in this club and invest in players.
“The money was there so let’s use it in the smartest way and that’s what we did.
“Since I’ve been here, we’ve always sold players and bought players because that’s how it is.
“I don’t know what our net spend is at the end, but we bought fantastic players in.
“Like Gini Wijnaldum, what a player he is. We bought him from Newcastle, playing left-wing or whatever so that’s really nice.
“So really good signings and two for really big money.”