We hope so! This is only v1 of our service. We will be adding UPS, Fedex and OnTrac support shortly. We will find the fastest or cheapest option with all supporting carriers on the fly.
Size of the box is also a very important factor. Using the free USPS boxes, it can be double or even triple the cost of a tight fitting box. Size does matters ;) We currently have 20 different sized boxes in our warehouse.
We are trying to offer an amazing service but still remain competitive to current pricing.
Saying that, there will be a ton of people who will do anything to save a dollar. I value my time very highly and assume a lot of other people do as well.