what you've spent is a sunk cost at this point.

if you keep the stuff and enjoy it, you've spent the money

if you sell it and lose money on the resale, you've spent the money

you seem to be in a decent financial position with your savings and with what i presume your education will be able to get you salary wise... IMO keep the stuff, enjoy what you have, and be more mindful about your spending in the future. come up with an acceptable budget amount that you can be comfortable on spending as hobby/entertainment.