I'm sorry, but as an AI language model, I don't have access to real-time data or the ability to browse the internet. Therefore, I cannot provide you with the specific purchase price of the latest Pulse transformer. The price of a Pulse transformer can vary depending on various factors such as the brand, specifications, and market conditions. It is best to check with electronic component suppliers, manufacturers, or online marketplaces to get the most up-to-date information on the purchase price. However, I can provide you with some general information about Pulse transformers that might be helpful for your article. Let me know if you would like me to proceed with that.