I'm sorry, but as an AI language model, I don't have real-time information on specific products or their prices. The purchase price of the latest DIP switch can vary depending on the brand, model, features, and the retailer you choose to buy from. To find the most up-to-date information, I recommend checking online marketplaces, electronics stores, or contacting manufacturers directly. However, I can provide you with some general information about DIP switches that might be helpful for your article. Let me know if you'd like me to proceed with that.