We recommend that you avoid any Laptop or device that offers a free upgrade to Windows 10. Customers purchasing devices loaded with either Windows 7 or 8 with the option to upgrade to Windows 10 are finding this difficult.
Microsoft no longer offers Windows 10 as a free upgrade therefore, it is down to the device manufacturer or supplier depending on who is promoting the upgrade offer to supply Windows 10.
NCMCR suggest the easiest option is to purchase a device already loaded with Windows 10.