I have some questions, and I would love to get answered by some experts please.

1- How long does it take to get first sale organically for a new fba listing (estimated)?

2- I am doing retail arbitrage, and First product I tested were three units, I sent them to fba, and got 2 sales with ppc and got the last 1 sale organically, is there a sign that it is a good product and should I test it again with larger quantity?

3- Currently I am selling Iphone cases, I sent 50 units, and I run ppc campaigns including manual and auto, getting high impression and low clicks, and literally no sales, what should I do? I optimized the title, description, bullet point very well with keywords. Should I stop running campaigns and wait for it to rank organically?

Hey, everyone. I am a new seller on Amazon. I just started a month ago, and my product is ready for sale. I have launched a campaign. I am getting impressions but not clicks and sales. What should I do?

Hello, I am a new seller on Amazon. I am trying to list my first product but I don't get the (I am listing a product not sold on Amazon) option. I also can not apply for GTIN. Please help me>