I apologize, but I don’t have access to real-time property listings. However, if you’re looking for 300 sqm plots in Pocket 7A, Sector 18, Yamuna Expressway, here are some general steps you can take to find available options:

1. Contact Local Real Estate Agents: Reach out to real estate agents who specialize in the Yamuna Expressway area. They can provide you with information on available plots in Pocket 7A, Sector 18.
2. Explore Property Websites: Visit property websites that focus on the Yamuna Expressway region. These platforms often list various plots and provide filters to narrow down your search based on plot size and other criteria.
3. Consult Real Estate Developers: Check the official websites or contact real estate developers who have ongoing projects in Sector 18. They may have 300 sqm plots available or can provide information about upcoming projects that match your requirements.
4. Local Newspapers and Classifieds: Browse local newspapers or classified ads in the area. Sometimes, sellers advertise plots for sale directly, and you may find suitable options there.

Remember to conduct due diligence, verify the authenticity of listings, and consult with professionals before making any property-related decisions.