You're missing two things:
1. that person is just plain wrong, these are steady $350 each - $700/pair, everywhere. Yamaha makes smaller, cheaper monitors in this series, that person is confused.
2. you (and anyone else getting in) is probably going to buy 2, so - gets even cheaper.
Really, you're missing nothing, should ignore that crying dude. ;)
These are big, booming, monitors. Had I not just bought a different set,...