Hello,
We recenlty developed a plugin for woocommerce for one of my client's store which sells third party products on their site and when user orders product on their store, it's being sent to that third party via API.
It works great on their site and so we think we are sure that we can develop same for your store too.
Let's discuss more so we can decide and plan out how we can develop a plugin/adon for woocommerce that will send order details on shopvox which will update the inventory and process orders from there.
Talk soon, Thanks.