Garry Monk reckons Gylfi Sigursdsson is proving the bargain of the summer.
The Icelandic playmaker is pulling the strings to Swansea's lightning start to the Premier League.
And his double strike for Iceland this week sank World Cup semi-finalists Holland in a Euro 2016 qualifier in Reykjavik.
Monk said: "Gylfi has been under-rated and could play for any of the top sides. But he feels comfortable here, likes the way we play and we allow him to express himself."
Sigurdsson is yet more proof that Swansea are trade masters in the transfer market.
Michel Vorm cost just £1.5million in 2011 and was an instant hit. A year later, they picked little-known Spanish striker Michu for £2.2million and he scored 22 times in a season.
And Wilfried Bony may have cost £12million, but immediately responded with a record 25 goals.
Sigurdsson returned to the Liberty Stadium , where he scored seven goals in the second half of the 2011-12 season while on loan from Germany's Hoffenheim, from Tottenham in a swap deal involving left-back Ben Davies.
His six assists in the Premier League already put him second only to Cesc Fabregas (seven), who cost Chelsea £30million. Sigurdsson has also scored two goals so far, one in the league and one in the Capital One Cup.
Monk said: "It's about signing good players to fit with our style and he matched that. That's why we pursued Gylfi throughout the summer and he hasn't let us down.
"What many don't see is how hard he works as well. He doesn't stop running and doesn't get enough credit for that.
"His work-rate is infectious. When the other guys see someone working extremely hard they know they have to put in a shift."
