Recently http://iotaprice.com site updated now showing a useful chart includind exchange pre-launch prices (OTC trating using YDX bot) so you can have a better figure of IOTA price evolution over time.
The site also has very useful information about how to set up a wallet with one of the four options available right now.
It's holding a IOTA giveaway, too, so you'd better have a look at it!