Let me get into your conversation and provide you an overview, @deycomin.
Your screenshots helped a lot. The Inventory Asset decreases when a customer buys goods from you to arrive at the cost of goods sold (COGS) sold ($18.80 not $20), while it increases the Inventory asset when you purchase an amount (470 not 500) from a vendor.
The Inventory Asset focuses on the COGS. That's why the price appears there is the actual cost but not the sales price. Every time a customer buys goods from your inventory will decrease your inventory asset.
You can check and customize the Sales by Product/Service Detail report to run a specific sales report.
You can refer to this site to look for video article and specific topics you might need in the future: Manage inventory.
Please feel free to leave a message if you need help. I'm always here to guide you. Take care!
