GOG.com is having another sale on Zork games. All Zork games (and lots of other games) are 50% off now during their Winter Sale. All Zork games are only $2.99 each! I'm not sure how long this will last, but it's likely to last approximately a week. They will also have bonus coupons (click one of the "gift boxes" on the home page) and additional sales throughout the week, so you may be able to save even more on these games at certain times.
You can see all their Zork games at this GOGmix.
GOG.com has The Zork Anthology (includes Zork 0-3, Beyond Zork and Planetfall), Return to Zork, Zork Nemesis and Zork Grand Inquisitor, for only $2.99 each!
All Zork games 50% off at GOG.com during their Winter Sale!
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