Civ3 and complete Rollercoaster Tycoon for $13: Should I?

[James]

Our store is having a buy one get one free on all computer games.

Our selection isn't all that great, but we have Neverwinter Nights (with one expansion), Civ3 (no expansions), Rollercoaster Tycoon (all three expansions), Civ3/RCT2 2-pack (no expansions), and... um... Boohbah Activity Center?

So yeah, do you think it's worth it? I've heard some terrible things about Civ3's combat (That spearman killed my tank!), and maybe I just want the games because of the sale. So I need some voice of reason here.