The competition licenses include support (like that netsuite €180 license). Odoo doesn't.

When you factor in finding another company to provide support them Odoo becomes easily equal in cost to other options. Or you have to do it yourself which is also very expensive (in time rather than money).

Also for some weird reason the Odoo forum is incredibly locked down. After a year of using it, I hadn't even earned enough trust to comment, let alone ask a question.