Sponsored post value

Hi All, Happy new years! I am contemplating on whether or not to pay for a sponsored post on a website that has a domain rating of 71 on Ahrefs' authority checker. The reasons why I'd pay $600 for this sponsored post is to get a solid back link (option to make it a do follow link) and I'll get solid exposure which can potentially get me leads. Is $600 a solid value? Would love to hear your thoughts