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Computer Cases Under 100

The best computer cases under $100 are designed to house and protect your PC's most important parts—including the motherboard, the processor, and the graphics card. They're available in a range of sizes and styles, from minimalist designs that provide just enough room for a few drives and a graphics card to massive full-tower behemoths with room for multiple hard drives, optical drives, and water cooling. Some are designed for gamers who want to show off their hardware. Others are built to help you make your computer as quiet as possible. Browse the top-ranked list of computer cases under $100 along with associated reviews and opinions.   

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  1. Thermaltake - V100 Perforated Computer Case - Black

    SKU: J39ZPCG2ZH

    Product Description

    A black mid-tower chassis featuring a perforated side panel, preinstalled 120mm fan, and PSU cover.
    See all Computer Cases
    Your price for this item is $49.99

  2. GAMDIAS - Mars E2 Micro ATX Mini-Tower Case - White

    SKU: J3R7L47YLW

    Product Description

    A white micro ATX mini-tower case featuring tempered glass, brushed aluminum, and advanced cable management.
    See all Computer Cases
    Your price for this item is $54.99

  3. Incase - Edge Hard Shell Case for MacBook Air 15-inch M5 2026, M4 2025, M3 2024 - Clear

    SKU: J3GTKHKXX2

    Great case...I absolutely love this strong but minimalist case for my Apple laptop!...Good Case...One of the very few cases certificated by apple, its lightweight and you can barely notice is there, great...

    Product Description

    A clear, lightweight hard shell case offering scratch protection and full access to ports and buttons.
    See all Laptop Hard-Shell Cases
    Your price for this item is $39.99
    Save $9
    The previous price was $49.95

  4. Techprotectus - macbook PRO 13" case for M1,A2238,A2289,A2251, A2159,A1989, A1706, A1708 M2 2022 A2338

    SKU: JXR3XTZVX3

    Good case...Sturdy case but comes with venting on the bottom that is not necessary for the MacBook Pro M2 Chip 2022...Laptop hard shell case...Very cute laptop case!! The color is so cute and it’s very...

    Product Description

    A durable blue hard-shell case offering dust-resistant protection for your MacBook Pro 13-inch models.
    See all Laptop Hard-Shell Cases
    Your price for this item is $29.99

  5. Thermaltake - View 380 TG ARGB ATX Mid-Tower PC Case - Bubble Pink

    SKU: J39ZPC6LK3

    Product Description

    A bubble pink steel mid-tower case with tempered glass panels and four preinstalled ARGB fans.
    See all Computer Cases
    Your price for this item is $99.99

  6. Thermaltake - TR100 SFF mITX Mini Tower PC Case with PCIe 4.0 Riser Cable Included - Mint Strawberry

    SKU: J39ZPC6YH3

    Product Description

    A compact mint strawberry steel mini tower case featuring magnetic panels and included PCIe 4.0 riser cable.
    See all Computer Cases
    Your price for this item is $93.99
    Save $36
    The previous price was $129.99

  7. Techprotectus - MacBook case for 2023-25 MacBook Air 15" with Apple M2/M3/M4 Chip - Clear

    SKU: JXR3XT4JY2

    MacBook Case...I bought this for my daughter for college. Great case for laptop protection....Macbook case...It was an amazing case for my macbook air it’s gorgeous

    Product Description

    A clear, lightweight plastic case offering dust-resistant protection for your 15" MacBook Air with M2/M3/M4 chip.
    See all Laptop Hard-Shell Cases
    Your price for this item is $36.99
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In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.