You need to decide between a paid or free theme for your affiliate website. You must know that a paid theme offers more features and better support. You should choose a paid theme if you want advanced customization. You need to ensure the theme is fast and SEO-friendly. You must consider a free theme if you are starting with a low budget. You should pick a free theme with good reviews and regular updates. You need to focus on functionality and user experience. You must prioritize themes that fit your affiliate goals. You will succeed with the right choice regardless of cost.