There are probably quite a few $1800 subs it does outperform. Over-priced token efforts from hi-fi speaker companies like B&W, Dynaudio, Dali, and so on. I find REL to be a horrendeous value as well. They will all slap a 10" or 12" into a box with a 500 watt amp, give it a high Qts tune to like 35 hz with oodles of distortion ("it's musical!"), give it ten coats of lacquer, and charge $2k for it. There are a few speaker companies that take subwoofers seriously, but not many. Paradigm and ML have some decent but pricey subs. Klipsch has a few worthwhile subs too.