[gb2world]

You could use the product extra field (not an extra option field) to remove the add-to-cart button and replace it with your "product available for pick up" message. That way - customers would not be able to add the item to the cart. If you do that - I'd also suggest adding XCARTMODS X-Cart Direct Product Enquiry Form - so they have a way on the product page to contact you directly about that particular product if they have questions.