Entering for GOTY when you own the base game?

It's generally up to the giveaway creator. There is no clear rule about this, but you should take into account that you already have the game while others might not have anything. I personally don't do this.

it's only more acceptable is the dlc cost more than the base game.
but check with the giveawayer first before entering

Or what if i cannot buy the DLCs (region restriction or other crap).

I'd say it's bad form, except for the rare cases where DLCs have considerably more content (and value) than the base game. In those few cases, I'd check with the giveaway creator first.

Examples: Magicka Collection, Dungeon Defenders Collection. Nothing else comes to mind at the moment, but you should be getting the gist of it.

I guess fact that I felt uneasy and wanted to ask first tells me all I need to know. I'll keep in mind to check with the creator in the odd case where it doesn't feel like I'm cheating everyone else entering though.

Thanks guys :)

For me, depends on the giveaway and the giver's description. If they say not to, I don't. If there's only 1-2 DLC in the GOTY, I don't... if it's an extensive amount of DLC then I might. Also the price comes into play for me too... if the base game is like $10 then I'd be more likely to enter compared to if the base game was $40.

I'd feel uneasy entering them so I don't enter them. Same goes for "packs" with DLC's. For example Saints Row The Third. I own SR 3 and I don't enter Full Pack giveaways even though I want all DLC's.

My short answer: yesh!