If you haven't had any luck with the post code search for 'click and collect', then this item may no longer be available in your area for ‘click and collect’ and so cannot be purchased through the online store. Please note that each store needs to have enough available stock in their location for ‘click and collect’ to be used.
The item will be listed as available as it is able to be purchased from a nationwide location that may be outside your radius. This is when the message will pop up telling you to choose delivery, if you then do not see the clickable option for delivery, then this is a clear indicator that the item is unfortunately sold out for delivery at this stage.
You are still welcome to pop into your local Skechers Store to purchase the stock there directly if it is available.