I have spoken with architects who want anywhere form 1% -10%. I have spoken with archtiects that may want $1 per square foot.
Really it depends on what you are getting from the archtiect. Some archtiects draw the minimum to get building approval. Some help the owner manage the job from start to finish.
I had one architect willing to stamp my "canned print" for a quick $1,000. I spoke to another archtiect, who mainly does commercial work that wanted $7k just to stamp the drawing. Another architect wanted to redraw the print, using the canned print as a concept and build a huge house and help me manage the job from start to finish. Really all I would need is the stamped approval. Why would I need an architect to help me manage the job and pick out materials?
(This post is in regards to the the vacation house I was gonna build until I decided to get married instead.)