The Netpeak Spider is one of the tools you can promote as a Netpeak Software affiliate. This is a desktop tool for SEO auditing, comprehensive analysis, and website scraping. It features a free trial and a freemium pricing model. The Standard package starts at $19/mo. There are more expensive options as well.
Another of their tools is the Netpeak Checker. This is a desktop tool for SERP scraping and data aggregation from top SEO services. It has useful features for link builders, SEO specialists, webmasters, marketing and content teams, bloggers, and sales teams. Pricing is the same as for the Netpeak Spider tool.
You can offer your traffic a 25% discount for their first purchase of the Netpeak Spider and the Netpeak Checker.