I've gone through 30 pairs of earphones but I have a hard time letting them go - Still currently have 12 with 2 more on the way. Although now that I'm saving up for customs, I feel like I won't need so many pairs in my possession at a time.
There is only one that I have absolutely no plans on selling: JVC FX700
Ones that I intend on keeping but will sell if absolutely necessary: Westone 3 (LE), MDT
Cannot wait to get my hands on more earphones!