Yes ordo, that'll be it
So, for a single metal blade you need to spend upwards of 500?
Oh, no. MillionKnives just mentioned 'author' damascus knives from very reputable blade-smiths in America.
If you resign the idea of having a fashion damascus blade, and please do it, you can have for instance a Hiromoto (Benuser can tell more about this brand than me, but i guess the Honyaki series is single metal) for about $279, which is really cheap for honyaki blades. Here's a 240 mm. gyuto (please skip the Santoku).
Also Misono Swedish mono steel 240 mm. gyuto for $137,70
Masamoto HC 240 mm. virgin carbon steel gyuto for $212.
And Hattori, Kanemasa, etc., all single metal knives NON damascus.