One question and an observation. Q: if this is a "swap", who pays the 4 bucks? Both parties? O1: I think you are onto something here. But it is probably not t

One question and an observation. Q: if this is a "swap", who pays the 4 bucks? Both parties? O1: I think you are onto something here. But it is probably not this exact idea. If your proposition is "cheap + used + as fast as Amazon"... why not just use Amazon? People with books valued over 4 bucks lose out; better to sell it. O2: You have been working on this full-time for 6 months, and have 3 months more to go? That is an unhealthy amount of time to do something like this without user feedback. I am tempted to invest, but I think that's more to do with the low minimum than my excitement. The most innovative and clever thing is the funding method, not the business.