| F31 National Standard Journeyman Mechanical Questions Workbook | $81.99 |
| F29 National Standard Master Mechanical Questions Workbook | $81.99 |
| W29 National Standard Master Mechanical Questions Workbook | $157.98 |
| 2012 Residential Electrical Inspector | $153.98 |
| 2015 Residential Electrical Inspector | $76.99 |
| 2018 Residential Electrical Inspector | $76.99 |
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| F24 National Standard Master Plumber Questions Workbook ICC Exam | $81.99 |
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| G18 National Standard Residential Electrician Workbook ICC Exam | $76.99 |
| W16 National Standard Master Electrician Workbook ICC Exam | $78.99 |
| T18 National Standard Residential Electrician Workbook ICC Exam | $76.99 |
| 2018 Commercial Mechanical Inspector | $78.99 |
| 2021 Residential Electrical Inspector | $76.99 |