Condition is more important than anything else. If the car is in good condition and you can negotiate a fair price, then take it to a shop to get a prepurchase inspection as @circuitsmith suggested. Make the negotiated price contingent on a clean inspection. You should negotiate the price first. If the owner won’t cut the price to around $3000, there’s no sense in getting it inspected. Let them know to call you if they change thier mind. You can keep looking. If they call and you are still in the market, it might be worth the pepurchase inspection.
An LSi hatchback with auto transmission, AM/FM radio, and air conditioning is worth a little less than $2200 in a private sale. A similar sedan is worth $2100. The mileage adjustment is only $550. Many owners have an inflated guess at the value of low mileage. It’s still 13 years old.
Tell is what model (hatchback base, hatchback LSi, sedan LSi) and the options, and we can give you a better estimate of what it is worth.