Checking out, we were asked if we would like to fi...

Checking out, we were asked if we would like to fill out a membership form. Being that we have recently become costumers and plan to continue to shop at B&N more frequently, we said sure. Not once were we told there would be a $25.00 fee to become a member.##!. We feel this should have either been mentioned or signage stating the charge.
If this was an over site by your employee, then I would suggest additional training. If this is a store policy, I feel it should be changed.