Is there any game/software costing 300P to enter?

It used to cap out at 150 points before for the largest game packs. I'm not sure if there's a new limit.

Entries are capped at 100 (or 150) points. You can't spend more on one entry.

Edit - and when you buy something worth $200, you will get 200 CV. It's just that entrants will spend 100/150 points to enter GA.

The most expensive GA I saw was the Eidos Anthology for a wooping 100p (it cost 200Euros tho!)

As others said, entry points are capped at 100p, while CV isn't.