Woocommerce Lightspeed POS Integration

I am putting together an e-commerce site for a client, using woocommerce. This client has a POS through Lightspeed. Woocommerce offers a plugin that will integrate his POS with woocommerce in real time.

My client has a table of rates set A-G on his Lightspeed Account (More you buy, the lower the price). But the plugin does not include a table of rates to integrate with woocommerce.

I need either some custom code, which I’d be willing to learn but don’t know where to start. Or perhaps someone reading this has an easier/cost friendly solution to this problem.

Thanks