Marketing opportunity - too risky?

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So, reddit, there is this celebrity (not like Hollywood, but odds are you probably have heard of them from TV) who does fairly informative and interesting releases on YouTube. On one of their episodes they made an accessory to a tool from scratch and designed it on the fly. I thought, "hey, that's pretty cool!" and made my own version in different materials with better feature set that can be easily mass produced.

Now my plan is to set up a supply chain for this product and ideally sell it on Amazon. I think it would be great there since people often buy the tool that it goes with from Amazon as well.

After doing some math and itemizing all the costs, I figured that to get this project rolling I would need to raise $50,000-$100,000 to get the ball rolling with minimal risk. I think I could raise these funds by letting people pre-order the product (at a slight premium, to offset initial tooling, testing, travel and startup costs) through a Kickstarter campaign. But that assumes that I would be able to generate 5,000+ pre-order sales to get into the quantity/price bracket that is workable.

Obviously, getting that many orders would require some marketing. So, I was thinking about sending one of my prototypes to the celebrity who originally inspired the whole venture with their original creation. If I could just get them to take a look at it, play around with the product, and let me know what they think about it - I would be ecstatic. If they liked it enough that they mentioned my fundraising campaign on their show - I would be so happy, I might go comatose. Finally, they have their own online store and I could even rebrand my product for sale there (this may mean less sales through my channels).

What would be some reasons not to send out this sample? I know they could just steal my version of the product, but I don't know if it's worth their time and I don't think it's something they would do. What else am I forgetting here?

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