Budget $100 Monthly Link-Building

I need a steady, month-to-month link-building partner who can work within a fixed $250 budget and focus exclusively on boosting my search-engine rankings. The website sits in a clearly defined niche, so every backlink must come from a closely related site rather than a broad, general outlet... (Budget: $250 - $750 AUD, Jobs: Content Creation, Content Marketing, Digital Marketing, Internet Marketing, Keyword Research, Link Building, Search Engine Marketing, SEO, Web Development, Website Analytics)