Overall, I think that Sia is a very interesting project and in a time where data decentralisation, privacy and security are becoming more and more important companies like Sia will become hugely valuable.
Decentralised cloud storage using blockchain technology is inevitable and the ability to securely store files on a blockchain provides huge advantages over standard cloud storage.
Being the first company that succeeds at providing a usable and reliable decentralised cloud storage system will likely be huge for the coins price and could therefore be a great investment opportunity.
A lot of the value of Siacoin and Sia will come from user adoption and currently this is looking quite promising. With the low prices that Sia is offering this is expected to continue.