– r/c submarines for sale. these are a few r/c submarine projects that i have or know of for sale. if anything looks like it would be of interest to you, please email. You will not find even one megabuck (over $ 20,000), super-power amplifier listed here, either solid-state or tube. why? none of them, regardless of their engineering. The c&c 30 is a high-performance one-design that offers the thrill and technology of big-boat sailing in a size that’s fun, easy to sail, and affordable..