Thanks for the idea, I mostly had in mind Costco won't sell me those parts so no point in contacting them. BUT I did called them and got a phone number and compagny name so I guess it's a good beginning. Also thought of googling costco wooden foosball table and found out a lot of results along with the part # from mfg and costco
http://www.welluniversal.com/col.jsp?id=114It's made by a compagny called Well Universal (china stuff obviously), they make electric fireplace, furniture, foosball table and some stuff like that. Found a few reviews by people who contacted them successufully and got some parts so it's not a dead end (hope and fingers crossed). I emailed and phone them, both phone numbers I found from them didn't answer but at least it's ringing loll Also emailing Alibaba sellers that have foosball bearings listed to see if they'd maybe have access to that part.
To be continued....