Startups initially, find it challenging in hiring pro-bloggers along with SEO professionals for optimizing their website. Even for branding and promoting their business, they need the digital marketing professionals which are an expensive process. But there are some agencies and writers offering cheap quality guest posting where the quality of the blogs are not compromised.
You can search Google and other search engines to explore the blogging service providers offering high-quality guest posts at nominal charges. You can also seek references from friends and colleagues that hire writers offering great quality blogs at quite an affordable cost and well versed with the style of guest blogging.