Yakuza 3 came out in North America on March 9th and Europe on March 12th. Many thought that the Playstation 3 exclusive would have never been released outside of Japan due to the low sales from the first two titles. 

Although Yakuza 3 did not exactly light any sales chart on fire in the west, Sega was pleased with the results so far. An assistant community manager from Sega of America recently posted the following message:

As was mentioned a couple times above, SEGA doesn't generally release any specific numbers in terms of game sales. (Even in Valkyria's case, after a huge surge, we listed percentages.)

So, while I'm not able to give you any numbers, I can at least still confirm that the initial sales were really positive, and that all of the fans who jumped in to support the franchise in the west did a great job.

A fourth Yakuza game is already released in Japan while a PSP spin-off, Project K, was recently announced. Furthermore, Yakuza Kenzan on the Playstation 3 still hasn’t made it over to the west. Hopefully, the sales success for Yakuza 3 in the west could result in more Yakuza games being localized.

http://www.examiner.com/examiner/x-6894-Video-Game-News-Examiner~y2010m5d19-Sega-pleased-with-Yakuza-3-sales-in-the-west

Great to hear that, this means higher chance of Yakuza 4 getting localized.

That's great news! Now I think we'll probably see Yakuza 4 in the west, too.

Cool. I hope Sega won't cut hostess club, mahjong and hanafuda from Yakuza 4 :/

Great, hopefully they will consider bringing the fourth one overseas soon.

Ok i liked Yakuza 3 but how can they see 100k sales as good?? I hope for their sake yakuza 4 sells good in the west like 1 mil

sales are ehh maybe not enough marketing???

They cut shogi, too. But hanafuda was left in Yakuza 3... or at least it was left in my copy.

Those guys are pleased with anything nowadays.

Sold 50,000 copies - pleased.
Sold 10,000 copies - selling acording to our "revised" projections...

Hard to see a flop being named a flop.

Yakuza 2 western sales were 50k and Yakuza 3 has already sold 160k in the west. Those are good sales for Yakuza game.

Its the top selling Yakuza to date in the western region, why though???

You can put a flop in front of it but they are still amazing sales for the franchise.