When I queue to buy an item that has previous items required - like for example "Leech" - It queues the 2 prerequisites - Bullet Lifesteal and Spirit Lifesteal. I can simply remove one of the 2 from the queue and still buy "Leech" without having both, but getting the benefit of both Bullet & Spirit Lifesteal fom the final item.
It is the same case with "Trophy Collector" for example. I can queue it, and then remove "Sprint Boots" from the queue, and only spend the 3200.
It is the same case with "Trophy Collector" for example. I can queue it, and then remove "Sprint Boots" from the queue, and only spend the 3200.