From the Basilisk site:

2013 Mega Sale!

We received quite a few emails from people upset that we missed Steam’s annual Holiday Sale. Sorry about that- we just didn’t get the information to them in time. To make up for it, we are having a 4-day sale here on our own website!

Eschalon: Book I  for  $2.95

Eschalon: Book II  for  $4.95