Costco has only 7 options for home theater setups (not counting one projector that comes in black or white).
However, the ones they do have are decent. No Benq 1070 unfortunately but they do have the Optoma HD131x for 1080p ($800 ca), the 180x ($540 ca) which I will likely get if the Epson doesn't do it for me, the HD25lv if I decide to blow the budget
($800 ca), and the GT760 if I decide to go short throw (which I might given I have a Kinect, $650 ca). Other than those they have the Viewsonic Pro8400 as their most expensive option at $1550 ca (haven't researched it since it is three times what I want to spend right now). And, finally, if I do like the LCD more than DLP and want to go 1080p they have the Epson Powerlite Home Cinema 2000 for $800 ca.
What Costco does have is an amazing return policy which I chose not to take advantage of because my projector had somehow had the model number label worn off on the bottom (even though the thing is mounted an inch from my ceiling upside down so no idea how that happened unless, when I cleaned the colour wheel with electronic cleaning solution, I somehow rubbed it off
) and I could not find the stupid box (which pisses me off since I save every gd box I get pretty much). So, since they couldn't be 100% sure it was the product I had purchased, they were concerned Optoma might deny it was their product and I would be on the hook for the $1070 ca.
And, of course, my conscience was bothering me too