I did NOT buy my compressor with resale in mind,,, reliability vs constant repairs and maint after a couple of compressors from cheap mfrs was my goal
I considered that the elec takes more money and work up front to have an electrical 220volt wired to where I plan on my compressor to live(I did my own elec work)
the gas one is ready to go with oil and gas fill up, but required constant gas fills and yearly oil change, but are mobile
I did not want to have to go outside to compress air in the Nebr winters,, elec is my choice,,, Coltri mch6 220 volt, is where I landed
my son can worry about resale after I am gone,,, I just want air to shoot and not another job maintaining/repairing equipment,,, I am lazy and go about 18 months between compressor oil change and still way under the 50 hr recommendation