It has always been our intention to allow the plans to be used for building a commercial simulator. Purchasing a plan set allows you to build one throttle quadrant (or simulator when those plans become available). You may use that simulator for commercial purposes, e.g. for a museum. (note however that as we have no control over build quality we cannot accept any liability for accidents or injuries that may occur as a result).
Another bit of news is that it is now only possible to log in to the site with your USERNAME (so please don’t use your email address, you will be locked out). This is as part of our ongoing security processes. If you have any problems logging in or other questions, please contact myself through use of the Contact Form.