Well, 'get them for you wholesale' in the short story probably means being able to obtain certain items or goods in large quantities at a lower price per unit and then pass them on to you. It could be things like products for a business, or perhaps a collection of items relevant to the story's plot.
In this context, 'get them for you wholesale' implies a bulk acquisition. It might suggest that there is a character or entity in the short story that has the ability to source items in large amounts, which is often at a discounted rate compared to buying individual units. This could play a significant role in the story, for example, if it's about a business deal or helping someone out by providing a large quantity of needed items.