How do you store your albums

I just had a nice collection of albums dropped in my lap. Over 40 MF Original Master recordings, misc half speed recordings and many other albums in perfect condition. The covers and albums are near new, many only played a few times then recorded to cassette tape. Should they be stored in plastic etc. and should I look to have insured. I don't think most are worth more than $50.00 but from what I could find several are worth $100's. Thanks for your ideas.