Tales of Tamar is free - at least the software is. The version you can order at dealers comes in a professional Box, complete with printed manuals, an impressive and very long intro, a complete CD soundtrack (3 CDs in total) and includes 300 turns (1 turn per day).
Exactly the same software (without the intro and the CD soundtrack) will be available from CoverCDs and Aminet. To play ToT you will have to buy a certain amount of turns seperately. There will be various offers, the cheapest one will be 10 EUR (IIRC, actually I'm not sure about this one), for people that just want to have a look at the game.