@Seller_OvL8C4BJWiuS9 told you the truth.

NO ONE is going to give up a source that they spent weeks/months/years developing.

As to the sourcing I go back 20+ years for my first products and I ended up with them because I could not find supplies for one of my hobbies (since gone dormant).

I looked around and found one of my old packages and called up the company. Found out they DID/DO sell wholesale and only required something like $500 initial order and a tax exempt number.

Filed with the state for maybe $10 and put an order on plastic for the $500+. Took about six months to pay off the card balance.

Kept adding suppliers and it became easier since they all ask for trade references and I had ONE. Found another small company that didn't have a large footprint and they let me in and again a small opening order.

NOW with TWO references it got easier for larger companies in the same or similar industries -- competitors of company #1 or #2 since competitors LOVE to compete for your business!

Find local or regional businesses looking to expand distribution, new companies just starting out ( I have had a few that I bought from and they failed.)

Something that you know about or WANT to know about that doesn't have 10,000 offers on Amazon.

The possibilities are endless but it is VERY hard if you start with the 'big boys' in any industry. Those guys want some large orders. I had one manufacturer of products that I was sourcing from hobby supplier #1 but I wanted to go direct to save about 20%. They wanted $5,000 minimum and a pallet full of two or three SKUs as a starter. Did NOT happen.