looking for some inner-ear monitors?
https://www.kickstarter.com/projects/584645150/flare-audio-a-revolution-in-pure-sound/description
its on kickstarter. £79 at the moment, but the price will double soon. they also say they’ll honour this price for backers if the campaign isn’t fully funded.
The reviews are excellent, & reading the blurb from the manufacturer, they reckon they’ll work with custom moulds too.
I’ve backed this kickstarter campaign.