Now accepting payments for USA & foreign orders using PayPal

PayPal also now allows you to pay using the following credit cards

Click on this logo  to get a free PayPal account

Going back to December 2008 all of our online sales go through PayPal.  It is still our only accepted method of online payment.  Of course, with your PayPal account you can specify that payment come from your credit card, checking account, bank account, PayPal account, or e-check.  This protects both the buyer & the seller.  If you do not have a PayPal account, it's very simple to open one - free.  Just go to www.paypal.com and get started.

January 16, 2024  I no longer ship PRINTED books or booklets. 
We only email electronic PDF's.
This greatly reduces both the time to receive your desired information and your cost for any item.

All the fun items available on the InventorDoug.com.com web site are listed below along with prices.  If you are interested in learning more about any specific product  just click on its ITEM GROUP title.  To come back to this order form afterwards click on the back button of your browser.

155 MPG
California Commuter
Plans: 44 pages of detailed drawings and information.  How to build the California Commuter  $7.95 CCE  
California Commuter: Technical Booklet $3.95 CCT
H2O2 Rockets Hydrogen Peroxide Rocket Racing Book $6.95 H2O2
Steam Rockets Steam Rockets2 Book $6.95 S2
Truax: Hot Water Rockets Booklet $3.95 ST
Solid Rockets Rockets from Design to Launch (Student's Manual) $3.95 RDS
Rockets from Design to Launch (Teacher's Manual) $3.95 RDT
Air Car Plans for all four Air Cars $3.95 AC

Nuclear War Game


If for any reason at all you are not completely happy with anything you purchased from  we will take it back and give you a full refund  - no questions asked.   





 simply return the item to us within 30 days. 

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