Technic at $[price] for 70 pieces sounds like a joke until you see the price grade — this little submarine is priced so cleanly it almost doesn't matter that the build is over in twenty minutes.
The parts alone are worth about 205% of the street price — the basis for this A price read.
BargainThe parts alone are worth more than you pay — $9 of parts for $4.
The Research Submarine is one of those sets that lives or dies by context. Seventy pieces is a lunch-break build, and without minifigs there's no character to anchor it on a shelf — it's a shape, not a scene. The price grade is the real story here: LEGO® got the number right on a small Technic set, which isn't always a given. Build experience is competent but thin, and the love grade reflects that honestly — most builders will enjoy the twenty minutes and then wonder where to put it. It fits a desk corner or a Technic fleet display but won't command a shelf on its own. A solid B+ overall because the fundamentals are sound, even if the wow factor isn't.