Hi, your Silkie's pretty cute.
That one looks like a boy.
Standard price I see is $5-10. Unless they are full grown laying hens then $25-40 MAX depending on quality. No way you can call them show or pet worthy unless you've been showing and are VERY familiar with the standards of the breed... and even then, not until they are grown out.
I personally wouldn't get rid of any until you are SURE of gender... otherwise you might end up with NO females. My last batch ended with 7 boys and 3 girls, and 1 of the boys was a late bloomer not showing gender until several weeks after the others.
That one there is of the bearded variety, which I prefer over non bearded.
Congrats on finally getting your silkies... I hope they are less broody than mine!