Table is a great tool to maintain tables and unlike some others has great capabilities to format and print. It has all the formulas you ever need for home use.

File formats:
Unfortunately it's use is limited for business users. It only imports Excel format files. Export is limited to CSV and PDF formats. OpenDocument standard formats are not supported either. (Suggestions for a next release?). Most important saving or exporting in Excel format is not supported. This is a must have for business users.

Ease of use:
Contextual menus have not been implemented. This is a shortcoming for most users. E.g. to delete a column I need to move to the Tables menu, select Edit, Delete and then Column; Too many transactions for power users.

Overall rating:
Ease of use and value receive 3 stars due to missing contextual menus and limited Excel support. $49 for an apllication that does not fully support current or future standard file formats is simply too much.
Features is 3.5 as the wishlist for business users has some basic and important items: pivot tables, sorting, etc.

Recommendation:
Home use: buy it, it does everything you ever need at home
Business use: wait, you will only be able to read excel files today, sharing files with non-tables users is CSV or PDF only
To the developer: Great work, but keep in mind how and why people use the application (is this business or home-use software?)