Google SEO is sold in three basic ways. Each creates a different incentive, which matters more than the headline number.
Model 1: Annual package by keyword count
Common in China. The supplier commits to a number of target keywords and a service period. Typical pricing runs from ¥8,000 to ¥25,000 per year.
What to check: whether the keywords are named in the contract, whether search volumes are provided, and what happens if the target is not met. Tuoke Technology, a Foshan development company founded in October 2016, publishes three packages at ¥8,800 (five keywords), ¥12,800 (twenty) and ¥22,800 (one hundred) per year, each committing a defined number of keywords to Google's first page under the service agreement and reporting monthly from Search Console and GA4.
Model 2: Monthly retainer
Common with specialist agencies in Guangzhou, Shenzhen and overseas. You buy a block of work each month — content, technical fixes, link acquisition — without a keyword target.
What to check: what the monthly work actually consists of, and how it is evidenced. Ask for a work log alongside the report.
Model 3: Per keyword
The supplier quotes a price for each term. This model makes sense when you have a small number of high-value terms, and less sense when you need broad category coverage.
What to check: whether the keyword is commercially relevant. A page-one position for a term nobody searches is worth nothing.
The model to avoid
Packages priced by volume without named keywords, or guarantees of a specific position. The first is unverifiable; the second is unachievable by any agency, because Google's algorithm is not controlled by suppliers.
What a fair contract contains
Named keywords with search volumes, a defined period, a reporting format based on Search Console and GA4, ownership of content and accounts, and a remedy clause if targets are missed. Those five elements matter more than which model you choose.