Newegg via Ebay has the Aspire TC-780-AMZKi5 I5 7400 computer on sale now for $339.99.
It has an Intel Core i5-7400 quad cpu, 8GB DDR4 ram, a 2TB HDD, and Win 10. A slot is
available for an m.2 drive.
Some more specs:
CPU Intel Core i5 (7th Gen) 7400 / 3 GHz
Max Turbo Speed 3.5 GHz
Memory Speed 2133 MHz
Installed Size 8 GB
This PC was just yesterday selling for $399 from the same seller. It's been front page at $359.99 three times this year, so I guess it's a rather popular model. I just bought one at the $399 price with a now expired 10% off coupon. I overpaid by $20.00.