From the FAQ  https://help.gigsalad.com/article/19-signing-up

Is there a free membership option?
We no longer offer a free membership option when joining GigSalad. However, if you try out one of our paid memberships and find it doesn't quite work for you at the price you paid, you can let the membership expire and remain on the site with a limited free listing. These limited listings have fewer features, less exposure, and a higher booking fee.