I think if Lepin or anyone else wanted to copy the design they would just order the physical book and use it. At $110.00 with shipping to the US the U-Wing instructions are greedy. I'll pass until there's a more reasonably priced option.
The set looks great, and I'd love to build it, but I hope you consider selling digital instructions. $75.00 is excessive in my opinion, what is the cost of the Legos needed to build this? I can't be the only one that doesn't want to pay international shipping for a physical book when the set can be built from digital instructions. Please consider a lower priced digital option for your fans on a budget.