The Steel & Titanium map pack for Killzone 2 will cost USD 5.99, according to the the US PlayStation blog.
There's no word of a European-specific cost, but a conversion suggests it won't be more than a fiver. We hope. We're checking.
The Steel & Titanium DLC, which contains two brand new maps, will be released next Thursday, 30th April.
Pop over to the PlayStation US blog for a new trailer featuring the Wasteland Bullet and Vekta Cruiser maps.