Could you please tell me the price of SewWhatPro64?
The SewWhat-Pro (SWP) will cost you 65 $ and it's available for purchasing from the official website of the developer. If you plan to purchase, you'll obtain a new version that is compatible with new operating systems.
Purchase and download page: http://sandscomputing.com/products-shop/sewwhatpro-embroidery-editor/
Direct download link to install: http://www.sandscomputing.com/Applications/InstallSWP.exe
Note: For payment it's necessary to have a PayPal account, or you can create one while buying. It's more safer than it is on credit card and you can request refunds.