On our forum Fallenpixels posted this great offer
Signup online at Costco.ca to get a $10 GC to Costco with a new membership
Gold Star Membership: $55 per year – promo code: GSWEB68
Executive Membership $100 per year – promo code: EXEC44
Both include free spouse card
New Costco Memberships only – expire June 30th
If it asks for it, the awareness code is 51401
Unfortunately they never seem to offer the $25 gift card anymore but $10 is better then nothing.