When comparing different affordable SEO services USA, it's essential to consider several key factors to ensure you make an informed decision. Here are some of the most important factors to take into account:

1. Pricing Structure: Look at the pricing models offered by different SEO service providers. Consider whether they charge a fixed fee, hourly rates, or use a performance-based model. Choose the one that aligns with your budget and goals.

2. Services Offered: Assess the range of services provided. Ensure they cover on-page and off-page SEO, keyword research, content optimization, technical SEO, link building, and reporting.

3. Experience and Reputation: Check the provider's experience in the industry and their reputation. Look for reviews, case studies, and testimonials to gauge their track record.

4. Client Portfolio: Ask for examples of previous work or clients they've worked with. This can provide insights into the quality of their services and their ability to handle projects in your industry.

5. Customization: Determine if the provider offers customized strategies. Effective SEO is not one-size-fits-all, so they should tailor their approach to your specific business needs and goals.

Remember that affordability should not be the sole criterion for choosing an SEO service provider. The goal is to find a balance between cost-effectiveness and the quality of services, as investing in SEO is an important decision that can significantly impact your online presence and business success.