This guy has "a few" Arion chorus pedals for sale on my local Craigslist : r/guitarpedals
Arion Guitar Effects Pedals for sale | eBay
Used Arion SPH-1 Phaser – Centaur Guitar
Arion SPE-1 Parametric EQ Effects Pedal – Twin Town Guitars
Used Arion SFL-1 FLANGER Guitar Effects Flanger Guitar Effects
Used Arion DRS-1 Digital Reverb Effect Pedal - Adirondack Guitar
Vintage Arion Pedals on eBay - Tone Gems
Used Arion SCO-1 Effect Pedal | Guitar Center
Arion Metal Master Effect Pedal | Musician's Friend
Arion SCH-1 Stereo Chorus Pedal | BN1studio
Arion SCH-1 Stereo Chorus | Reverb
Large Replacement Knob for 3-knob Arion Pedals | allparts2014
Used Arion MIJ SDI-1 Distortion Effect Pedal - Adirondack Guitar
Modify Your Arion Tubulator Overdrive Alchemy Audio Guitar - Etsy
Arion Compressor SCO-1 – Moze Guitars
ARION EFFECTS PEDALS - YouTube
Gary Moore - Arion Model HU-8500 Stage Tuner guitar pedal (missing battery compartment cover) *This pedal features in the "Sound Advice" section of Guitarist Magazine, May 1998, where it can be seen