Ad costs in Sydney push more businesses into organic search, so the competition for a first-page result runs harder here than the ad budgets alone would suggest. A ranking you could hold in a smaller market takes real technical and content work to hold in Sydney. If the SEO is average, it will not pay for itself against that level of competition.
The competitive picture also changes by area, so a single plan for all of Sydney tends to miss. A trade in the Parramatta and Greater Western Sydney growth corridor is competing on different terms than a professional services firm in the CBD or North Sydney. A hospitality venue in Redfern is up against a different set of local rivals again. We read the competition for your actual suburbs and services before we commit to a plan.