The most affordable SEO strategies are those that involve you undertaking activities yourself, on your own website, as part of your business activities. This constitutes what we can call “Natural SEO”. You don’t have to be an SEO expert to do this. 

Tips:

1. Add quality, relevent blog posts to expanded your website, grow your keyword pool and link to your product or service pages
2. Create a nice graphic for your blog post eg an list graphic - use canva.com.
3. Ask other website owners to link to your blog post from their own quality, relevant blog posts
4. Mention your blog post on your own social media channels.
5. Post your graphic to your Pinterest and Instagram channels
6. Use Lumen5.com to create a nice video intro for your blog post. Load the video to YouTube and link back to your blog post.

All of this drives authority through to your website. Keep it high quality, keep it regular and you will see rankings growth over time.

Create epic content, broken linkbuilding, resource linkbuilding, networking.

Would love to get your thoughts on this @Rod Wills 

I've just finished an article on this - it'ss oemthing for which I harbor some passion!

 

Focusing on affordable SEO strategies that yield a positive ROI is crucial for businesses, especially those with limited budgets. Here are 20 strategies that are both cost-effective and likely to offer good returns:

1. Keyword Research: Use free tools like Google Keyword Planner to find relevant, low-competition keywords.

2. Content Optimization: Optimize existing content with targeted keywords, meta titles, and descriptions to improve visibility.

3. Quality Content Creation: Produce high-quality, valuable content that addresses your audience's needs and questions.

4. Blog Posts: Regularly publish blog posts to target long-tail keywords and keep your website content fresh.

5. Local SEO: Claim and optimize your Google My Business listing to improve local search visibility.

6. Mobile Optimization: Ensure your website is mobile-friendly, as mobile usability is a ranking factor.

7. Page Load Speed: Improve your website’s loading speed by optimizing images, using caching, and minimizing redirects.

8. Internal Linking: Use internal links to help search engines understand the structure of your site and to distribute page authority.

9. Backlink Building: Engage in outreach to related businesses and blogs for guest posting opportunities to build backlinks.

10. Social Media Engagement: Share content on social media platforms to drive traffic and improve brand visibility.

11. User Experience (UX): Improve the overall user experience by making navigation intuitive and information easy to find.

12. SSL Certificate: Secure your site with HTTPS to improve security and potentially boost rankings.

13. Image Optimization: Compress images and use descriptive file names and alt tags to improve page load times and accessibility.

14. Schema Markup: Implement schema markup to help search engines understand your content and enhance search result listings.

15. Content Refresh: Update old content with new information and keywords to keep it relevant and improve rankings.

16. Competitor Analysis: Use free tools to analyze competitors' SEO strategies and identify opportunities for improvement.

17. Long-Form Content: Create detailed, long-form content to cover topics thoroughly, which can improve rankings and attract backlinks.

18. FAQ Pages: Develop FAQ pages to target question-based searches and improve your site's visibility in featured snippets.

19. Google Analytics: Utilize Google Analytics to track website performance and identify areas for optimization.

20. SEO Audits: Regularly perform SEO audits using free tools to find and fix issues that could be hindering your site's performance.

Implementing these strategies requires time and effort but minimal financial investment. Consistently applying them can significantly improve your search engine rankings and drive more organic traffic to your site, leading to a positive ROI.

This is a very abbreviated form of what I'm working on but I hope it at least points in the righrt direction.