This is a mega - price from play.com for the complete Farscape collecion - all 4 series for £69.99! (These are currently selling for appros £40 each!) I have this boxset, and I made my way through it a few montsh ago - it's a superb show for sci-fi fans. It says telp OOS at play.com at the minute, but you can order it now if you fancy it!
There is a new ULTIMATE boxset which will be out soon, but it is £175, and only contains the sequel mini-series I think... But that's just a warning to those who like to have the latest editions of everything!