If you want to allow your wholesale customers to buy now and pay later, Charge Me Later can be the Shopify wholesale app you’re looking for. It empowers you to allow your customer to create pay-later orders hassle-free. You can create customer groups and offer them custom pricing as per your wish. The app also packs features like bulk import/export and sending order invoices to customers automatically. Moreover, the app is free to install and configure. 

Charge Me Later pricing starts from $9.99 per month with a 4-day free trial.