9 Office Chairs

The prices of 9 office chairs vary depending on the purchasing scenario, possibly being 432 yuan, 108 yuan, or 108 yuan (with two different scenarios having the same price).

In the first scenario, a school spent 1008 yuan on purchasing 4 office desks and 9 office chairs, with each office chair costing 48 yuan. Based on this information, we can directly calculate that the price of 9 office chairs is: 9 chairs × 48 yuan/chair = 432 yuan. The price in this scenario is relatively high, possibly reflecting the school's higher requirements for quality and comfort during procurement, or including other additional costs such as transportation and installation.

In the second scenario, a company spent 252 yuan on purchasing 4 office desks and 9 office chairs, with each office chair costing 12 yuan. Similarly, we can calculate that the price of 9 office chairs is: 9 chairs × 12 yuan/chair = 108 yuan. This price is significantly lower than that in the first scenario, possibly reflecting the company's strict cost control during procurement or choosing products with higher cost-effectiveness.

The third scenario is consistent with the second in terms of price, where a school also spent 252 yuan on purchasing 4 office desks and 9 chairs, with each chair costing 12 yuan. Although the term used here is 'chairs' rather than 'office chairs', in the absence of additional information indicating a difference between the two, we can reasonably infer that the 'chairs' here refer to 'office chairs'. Therefore, the price of 9 office chairs is also 108 yuan. This scenario may reflect price differences in the school's procurement at different times or for different projects, or different requirements for the quality and comfort of office chairs.

In conclusion, the prices of 9 office chairs vary depending on the purchasing scenario. When procuring office chairs, in addition to considering price factors, it is also necessary to choose appropriate products based on actual needs and usage scenarios.