Assuming that you are running Stock Moto, and not going for the front/win in larger events, of course you can just order one from Honda. Many online dealerships will get you one at a competitive price.
Understand, however, that you will have additional work to do. The most important (and risky) of those is to install and shape the plugs for the powervalves. Verify bore, get the right piston/ring, new gaskets….
How many of those items are included with the Swedetech item, and do you place any value on your own time to do the prep work?