Bert Mendelson's "Introduction to Topology" is highlighted as an effective and affordable resource for undergraduate students. While not as comprehensive as Munkres' work, it offers a clear introduction to metric spaces and basic point-set topology. The book is praised for its accessibility and ease of use, making it suitable for those with limited background in analysis. At a price of $5.62 on Amazon, it presents a cost-effective alternative for learners seeking foundational knowledge in topology.