Quality Amazon Online Arbitrage Leads

I am an Amazon seller looking for 5-10 quality leads I can buy each week. I'm still gated in many products and my requirements are:

1. Monthly sales of 100+
2. Price stability for at least 120 days but, ideally, one year
3. Fewer than 20 sellers on each listing
4. Sources must be reputable
5. Margins of at least 20% profit and 40% ROI. These margins must support sales tax and shipping costs.

If you are agreeable, I'd be interested in seeing two leads from you so I can judge the quality of your work.