The best answer for your question on how much do Headshots cost is, it DEPENDS. On the low end, you can expect to pay $75, while on the high end you can expect to pay a $1,000 +.
What happens after 10k followers on Instagram?
Once you have 10k followers, Instagram will make it easier for you to get people to your website via Stories with the swipe up to link feature. Swipe up is the only way to get a direct link from your Instagram to your other web properties. And, it’s available in STORIES, if you have 10k followers.