| F32 National Standard Residential Mechanical Exam Workbook | $5,620.27 |
| G12 Building Contractor (B) 2018 | $8,612.01 |
| F13 National Standard Residential Building Contractor (C) 2015 | $8,018.01 |
| W18 National Standard Residential Electrician Workbook ICC Exam | $7,820.01 |
| W17 National Standard Journeyman Electrician Questions Workbook | $7,820.01 |
| W13 National Standard Residential Building Contractor (C) | $7,820.01 |
| 66 Fire Inspector I 2018 | $7,820.01 |
| W11 National Standard General Contractor (A) | $7,622.01 |
| W31 National Standard Journeyman Mechanical Questions Workbook | $6,159.20 |
| W16 National Standard Master Electrician Workbook ICC Exam | $6,398.19 |
| F25 National Standard Journeyman Plumber Practice Questions Work | $5,158.33 |
| 2012 Commercial Mechanical Inspector | $7,820.01 |
| G18 National Standard Residential Electrician Workbook ICC Exam | $6,929.10 |
| W25 National Standard Journeyman Plumber Practice Questions Work | $2,540.67 |
| G24 National Standard Master Plumber Questions Workbook ICC Exam | $1,217.86 |
| 2018 Commercial Electrical Inspector | $7,820.01 |
| 2012 Residential Building Inspector | $1,693.78 |
| F24 National Standard Master Plumber Questions Workbook ICC Exam | $819.90 |
| 2018 Residential Electrical Inspector | $7,622.01 |
| G25 Journeyman Plumber Practice Questions Workbook 2018 | $1,393.83 |
| 2021 Commercial Electrical Inspector | $157.98 |
| 2018 Residential Building Inspector | $4,927.36 |
| 2021 Commercial Building Inspector | $947.88 |
| 2021 Residential Plumbing Inspector | $76.99 |
| 2021 Residential Mechanical Inspector | $1,000.87 |
| 2018 Commercial Plumbing Inspector | $1,478.83 |
| 2021 Commercial Mechanical Inspector | $819.90 |
| F29 National Standard Master Mechanical Questions Workbook | $1,393.83 |
| F16 National Standard Master Electrician Workbook ICC Exam | $566.93 |
| 2018 Residential Plumbing Inspector | $1,770.77 |
| F18 National Standard Residential Electrician Workbook ICC Exam | $923.88 |
| 2015 Residential Plumbing Inspector | $2,694.65 |
| 2021 Commercial Plumbing Inspector | $260.97 |
| 67 Fire Inspector II 2021 | $78.99 |
| G29 National Standard Master Mechanical Questions Workbook | $81.99 |
| 67 Fire Inspector II 2015 | $1,421.82 |
| 2018 Commercial Building Inspector | $1,421.82 |
| 2015 Commercial Mechanical Inspector | $473.94 |
| F17 National Standard Journeyman Electrician Questions Workbook | $2,510.69 |
| W29 National Standard Master Mechanical Questions Workbook | $789.90 |
| 2012 Residential Electrical Inspector | $923.88 |
| 2021 Residential Electrical Inspector | $230.97 |
| G16 National Standard Master Electrician Workbook ICC Exam 2018 | $819.90 |
| 2015 Commercial Plumbing Inspector | $81.99 |
| 2012 Commercial Building Inspector | $1,105.86 |
| W32 National Standard Residential Mechanical Exam Workbook | $153.98 |
| W12 National Standard General Building Contractor (B) | $163.98 |
| 2018 Commercial Mechanical Inspector | $157.98 |
| F11 National Standard General Contractor (A) 2015 | $1,263.84 |
| 67 Fire Inspector II 2012 | $394.95 |
| 66 Fire Inspector I 2015 | $552.93 |
| 67 Fire Inspector II 2018 | $947.88 |
| 2015 Residential Mechanical Inspector | $384.95 |
| T17 National Standard Journeyman Electrician Questions Workbook | $157.98 |
| 2012 Residential Mechanical Inspector | $76.99 |
| F12 National Standard General Building Contractor (B) 2015 | $251.97 |
| 2015 Residential Electrical Inspector | $76.99 |