Currently, the standard ReCharge app does not work with the Quantity Breaks app. In order to offer price breaks for buying bulk or multiples of an item, we suggest using One Click Upsell to add post-purchase upsells to your store. This can be used for adding more of the same item to the cart at a discount. The One Click Upsell team has found that offering an upsell for items currently in the cart is very effective in getting upsell conversions. Click here to learn more how the integration works.
To replicate the image below, you can create 3 variants in Shopify, one for each pack size. For each product, you can specify a price and then add these variants to the product in Shopify.
To see a full list of recommended developers that have done similar work in the past, visit http://rechargepayments.com/experts