hi Gautam,
I'm having a memory freeze right now but I think we've seen this at the Santa Clara store, and possibly Fremont as well. Costco is rolling out the patio furniture now and some stores get the items faster than others. To potentially save you a trip, you can call up your store and ask if they carry item#966621 for this Agio 7-piece set.
The store price will generally be less than the online price, especially for large items like this, due to shipping and handling.
Regards,
Olli