Question about Origin Mass Effect game series and all DLCs

someone knows?

I don't use Origin neither do I buy EA games but afaik DLCs for Bioware games are bought separately on some Bioware store page...

EDIT : Apparently, it's free now. But you have to download it the oldschool way.

http://help.ea.com/en/article/mass-effect-bring-down-the-sky-dlc-redemption/

You can see DLCs only if you already have the base game on Origin. Apparently you can't just browse for DLCs like steam.
EDIT: click on your game icon, select "i" , scroll down and you'll find all the available DLCs.

You gave to buy the bioware points and then use them for DLC. It's stupid as hell and the points are fairly expensive.

Wait for the remaster
http://www.eurogamer.net/articles/2014-11-07-bioware-boss-mulls-mass-effect-trilogy-re-make

head to social.bioware.com
And the PC version of ME 1 has one of the 2 dlcs included, don't remember which one though.

Actually from what i remember with Mass Effect 1 Bringing Down the Sky is free but you might have to manually download and install it and Pinnacle Station isn't available outside of the franchise pack or whatever its called. The franchise pack has all the DLCs for all Mass Effect games included from what i recall , but i don't own it or any other Mass Effect games so i can't really say for sure. Google is your friend!