I agree with Higgins.If you want to sell crosshairs you should probably make a few and donate them to the community first so everyone can see the quality of your work.
AE and Higgins both made videos showcasing their products before they sold them.
Some screenies would be nice.
Keep in mind that sales might be low.AE has pointed this out and Higgins will agree.
And,as AE said,you will probably need to make more crosshairs than that if you want to sell anything at all.
But first things first.Show us what you've got and/or what you can do.