This could go either way. I had the same situation 2 years ago at one of the W hotels in NY. I booked a suite for $84 and think it was supposed to be $684. Upon check-in the two front desk clerks commented on the fantastic rate and asked how I got it. I of course said - "I booked it on your website!" So it worked out for me, though I was "worried" about it until check-in. I was very generous with tipping the staff that weekend!