The link will remain active to 30 days. If you like it, all you have to do is purchase again. Also check out my SEO report Add-On.
If you purchase one of the diversified link package upgrades, your links will be placed on the same type of high quality, high page authority blogs on platforms like blogger, weebly, wordpress, tumblr, etc. This provides great signals to Google about why your website should be at the top of the first page.