No longer exist–
I’d do it for pay but otherwise no.
Spec work is generally frowned upon in the professional community. See - http://www.nospec.com
But if can make an illegible doodle on a napkin and get $70, sign me up.
Sounds a bit un professional and non academic in the process. Care to shed more light on the methods and research objectives? Why would I need to post on social media?
$70 for a 90 minute call is light in and of itself. I’m guessing you’re geared more toward students at UofI than the professionals on this site.