Is it worth selling the instructions for my homemade? Tell me at what price it is best to do this🫣

I have already been developing a good powerful rally homemade rear-wheel drive for 3 months, and I think when I finish the steering wheel and slightly strengthen some places, I would like to make a little money on my model, but with one caveat, the axles are completely mine, but! The case itself was partially taken from sfcustoms, and will it be legal to sell the manual about $3-10? Look at the photo, are there any serious similarities that bring down the price of the instruction? I'll tell...