Newegg, the online retailer has spilled beans on the Windows 10 OEM pricing and release date. The Listings in question are for Professional and Home System Builder packages priced at $109.99 (Home) and 149.99 (Professional).
Even though Microsoft has refused to comment on them, it does not seem to have a issue with the listings remaining online. You can, in fact, pre-order them this very moment , although you will have to wait till August 31, 2015 for your order to be fulfilled.
If you are running a qualifying version of Windows 7 or Windows 8/8.1, you will be able to upgrade to Windows 10 the moment its availabl, otherwise you will need a retail or OEM system builder license.
We have heard from well-informed sources that the company is on track to release Windows 10 somewere in July, while the RTM (relaease to manufacturing) set date is likely to be in June.