Also, don't underestimate the need for a professional serious looking landing page/website. It doesn't have to be fancy, but it needs to look professional and not scare people. This is e-commerce and people won't stay on any site if they think the site is a fake or unsecure.
85% bounce rate is BIG. So like robax said, it could be that adwords is misleading.
85% bounce rate is BIG. So like robax said, it could be that adwords is misleading.