In 2011 a TOTL dynamic can was around $1500-2000 (random examples: Fostex TH-900, Ultrasone Edition 10), and that's stayed pretty consistent for most of the last 15 years. The "new comers" to the field are the genre of $5000+ products, five figure products, and $1000 products becoming the new $300-500 segment. I don't think its reasonable to say the SR-009 mediated any of that, especially when the price has come down significantly since launch (if I'm not mistaken, STAX more or less "bet the farm" to develop the SR-009, which was part of why the price was so high initially).
I wouldn't call the TH900s or anything from Ultrasone as TOTL.