It would be more of a convenience really(at least for me). I pay like $32 for 3/4 radiata or $56~ for 3/4 purebond. But I don’t have a truck so I have to get it cut down to fit in my vehicle. And my table saw is a small jobsite saw that has a rip cap of 22 inch(for now) so it becomes a hassle sometimes. And if I didn’t have the table saw, 
If Inventables could get it priced roughly the same plus whatever that convenience fee of them doing the work is, I’d be in. If I could get the equivalent of a 4x8 sheet(let’s say 8x 2x2 pcs for simplicity) I’d gladly pay like 10-15~ extra a sheet just to save the time spent at the store and cutting it down further. (I am talking full sheets here to keep pricing easy).
I feel shipping costs would be hard to make that work unless they got a phenomenal supplier or some awesome shipping rates so the profit may not be there.