You're way too late for Ikon pass which if bought early gave you 5 days at Steamboat for $599 (base pass), plus days at many other places. Late March is also late for best skiing at Steamboat, but that's based on history and you could get lucky. Tony Crocker's website says "Best in state in December/January for highest snowfall, but lowest elevation and worst exposure of Colorado destination resorts" for Steamboat.
Have you locked down lodging already? If you bundle lodging and lift tickets directly with them, potentially there are ski-and-stay deals.
Keep in mind, you dont need to be on the mountain here, you can be within 5 miles and still be the base in under 20 minutes.