Almost all of the tournaments I choose to play have a guaranteed prize pool but often, the number of buy-ins exceeds the guarantee and then it becomes a standard prize pool equal to the number of buy-ins.
The catch 22 here is that without the guarantee, it may not attract enough players to exceed the guaranteed prize pool.
Once it has exceeded the guarantee I essentially lose any value I gained by entering a tournament that had a greater ROI for my buy-in than it should.
In very rare cases, the buy-ins do not exceed the guarantee, and then I have extra value and less opponents to beat.
Why do poker sites offer guaranteed prize pools?
I assume it's because they know/hope that it will be exceeded as well as attracting more people, so ultimately more money for them.
How can I assess the value it provides to me when the number of buy-ins does not exceed the guarantee?
(Number of runners/Prize pool) - (My buy-in), and anything above zero makes it a better value buy in?
Lastly, does anyone know of a poker site where the guaranteed prize pool is often greater than the number of buy-ins?