Choosing the right price of a second hand laptop in Bangalore requires careful considerations. Here is how to decide a fair price step by step:

1. Research Market Prices: Research the market prices for the laptop make and model you want. Look at listings on online marketplaces, classified ads and local stores to gauge the price range for similar laptops in Bangalore.

2. Consider Condition: Check the condition of the laptop you are thinking about purchasing. Its value will depend on its age, shape, hardware specification and general functionality. Laptops in good condition with little use will generally go for a premium.

3. Check Specifications: Compare the specs of the laptop (processor, storage capacity, RAM, graphics card & display resolution) with similar designs available on the market. Laptops with better specifications or special features may be more expensive.

4. Assess Included Accessories: Consider any other accessories or peripherals which are included with the laptop, like chargers, carrying cases or software licenses. These add-ons may increase the package value.

5. Assess Warranty and Support: Consider whether the laptop still has some warranty or support from the manufacturer or seller. A laptop with an active warranty or support plan might justify the price hike for that added peace of mind.

6. Research Depreciation: Understand that laptops lose value as newer models are released and technology improves. Consider the age of the laptop and also the loss of value which has taken place after the purchase.

7. Factor in Demand and Supply: Consider the existing demand for used laptops in Bangalore and the number of models available in the market. High demand or even inadequate supply could cause prices to increase and decreased demand or supply may cause lower prices.

8. Negotiate Price: Prepare to negotiate the price with the seller based on your research and value of the laptop. Point out the flaws, defects or shortcomings to justify a lower price or use comparable listings to negotiate a fair deal.

9. Look Long-Term Value: Think long-term about the worth of the laptop and just how well it will serve you in the long run. A little more upfront for a better-quality laptop with better performance and durability might pay off over time.

10. Trust Your Judgment: Finally, use your judgment and intuition to determine what a second hand laptop should cost. Fake it if the asking price is too high or the laptop isn't what you expected.

By considering all these factors and researching well, you can find a fair and affordable price tag for a second hand laptop in Bangalore that suits your budget and requirements.