All of The Witcher games are currently on sale over at GOG.com. The sale, which started yesterday (May 16), sees the entire The Witcher series with up to 85% off their original price. The sale is in celebration of the next The Witcher: Wild Hunt expansion, Blood & Wine, which is due to release on May 31.
The details of the sale prices are as follows:
The sale is on until Wednesday, June 1st, 5:00pm UTC / 10:00am PDT / 1:00pm EDT / 19:00 CEST so you've got plenty of time to catch up with what Geralt has been up to before the next installment.