POLICY UPDATE: Trade-In Drop-Offs Are Now by Appointment

Starting July 2026, we are now requiring appointments for dropping off any material being brought in for trade credit or possible cash purchase.
This new system replaces our previous waiting list. We will no longer be scheduling quarterly trade-in hiatuses.

Please call the store for additional information and to schedule a drop-off appointment. Donations without needing credit do not require an appointment.

Computer Science

Computer Science

  • The Microcomputer Builder's Bible front cover by Chris Johnston, ISBN: 0830624732
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    The Microcomputer Builder's Bible [513172]

    Firefly Price $39.99
    This item is Used and is listed as being in Very Good condition. The dust jacket for the item is listed as being in No Jacket condition. Front and back covers have light edge and corner wear. Spine...
    Firefly Price $39.99
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  • Exploring the UNIX System (Revised) front cover by Stephen G Kochan,Patrick H Wood, ISBN: 0672484471
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    Exploring the UNIX System (Revised) [511686]

    Retail Price $29.95
    Firefly Price $7.99
    This item is Used and is listed as being in Good condition. Front and back covers have wear to edges and bumped corners. Spine intact, some wear. Binding is intact. Pages are generally clean with...
    Retail Price $29.95
    Firefly Price $7.99
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  • UNIX for Super-Users front cover by Eric Foxley, ISBN: 0201142287
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    UNIX for Super-Users [511685]

    Retail Price $29.95
    Firefly Price $7.99
    This item is Used and is listed as being in Good condition. Front and back covers have wear to edges and bumped corners. Spine intact, some wear. Binding is intact. Pages are generally clean with...
    Retail Price $29.95
    Firefly Price $7.99
    Add to Cart