Not sold at retail, but you can browse Sony
Some links here are affiliate links. If you buy through one, Creator Gear earns a commission, at no extra cost to you.
Creators cited with this
Sanjay CYouTube, 531K followers“These are the brand new Sony in-ear monitors, the M500. Sony sent them to me to try out, and I have to say, they've been doing really well with their headphones lately.”
Watch the video at 1:38
Creators who use this also use

Sony MDR-MV1 headphones
also used by 1 of them
Steven Slate Audio VSX Immersion (Immersion One)
also used by 1 of them

Steven Slate Audio VSX Modeling Headphones
also used by 1 of them

AIAIAI TMA-2 Studio Wireless+
also used by 1 of them

Audeze LCD-5
also used by 1 of them
Audio-Technica ATH-M20x
also used by 1 of them