Considering the price for the 3D boot is $30 I'm not exactly sure the purpose of the exercise.
Don't forget there will be postage costs which will need to be added.
Then add the costs of reproducing the wire clip which will need to be ordered in a minimum batch quantity, usually minimum of 100 off. Plus more postage cost.
Don't forget it is your bank account which will have to pay for everything up front, even if the product arrives to you and you are disappointed by the quality.
Then add for your your time and effort and any risk/s and losses involved.
All for a total market volume of no more than 100 off boots total world wide.
Also consider this product has already been reproduced, and the market is already pretty much flooded.
The end price of the 3D reproduction may be greater than the price I am offering the boots for now.
Also consider the risk on the unknown quality, especially long term.
Will the 3D materials last before falling apart or going hard?