>>9701358If selling it is 0 and pointless, you might as well keep it! The floor can only go so low. Would you pay $300 buckaroonies for your collection? I've only seen a third of it but I bet I would. If you're sick of seeing it, pack it up. LEGO can get real dense, but you'll regret it if you get rid of it.
Sell what you can conveniently, but also pack up what you can and keep it. I've never met anyone who has said "I should have gotten rid of my LEGO sooner"