Instructions for premium learning materials and paid digital credits
1. Executive conclusion
AKBuy can present its existing credits as a simple, auditable system for obtaining premium digital learning materials:
1 Course Learning Material Credit
= 100 Course Material Points (CMP)
= 1 Premium Course Learning Material Pack
1 QA Material Credit
= 100 QA Material Points (QMP)
= 1 Premium QA Material Pack
For the target areas (Mathematical modeling, economic forecasting models, business data analysis models, stock, option, and futures price forecasting models, etc.):
A high-quality Course pack will provide a structured learning path, original explanations, worked calculations, reproducible modelling steps, practice tasks, and quality checks.
A high-quality QA pack should answer one clearly bounded analytical question with transparent assumptions, calculations, validation, and limitations.
**All material pack is educational material, not a trading signal, personalised investment advice, or a guarantee of future performance.
**All content in pack are proposed AKBuy-original products. They do not reproduce or adapt a university course. Please purchase with caution.
2. AKBuy product catalogue
2.1 Course Learning Material products
| Product code | Current product name | Customer price | Credits issued | Recommended display points | Packs obtainable | Effective price per pack | Saving versus single-credit purchases |
|---|---|---|---|---|---|---|---|
course-1 | Course Learning Material — 1 credit | USD 24.90 | 1 | 100 CMP | 1 | USD 24.90 | USD 0.00 / 0.0% |
course-2 | Course Learning Material — 2 credits | USD 49.80 | 2 | 200 CMP | 2 | USD 24.90 | USD 0.00 / 0.0% |
course-4 | Course Learning Material — 4 credits | USD 79.90 | 4 | 400 CMP | 4 | USD 19.98* | USD 19.70 / 19.8% |
course-6 | Course Learning Material — 6 credits | USD 119.90 | 6 | 600 CMP | 6 | USD 19.98* | USD 29.50 / 19.7% |
2.2 QA Material products
| Product code | Current product name | Customer price | Credits issued | Recommended display points | Packs obtainable | Effective price per pack | Saving versus single-credit purchases |
|---|---|---|---|---|---|---|---|
quick-assignment-1 | QA Material — 1 credit | USD 9.90 | 1 | 100 QMP | 1 | USD 9.90 | USD 0.00 / 0.0% |
quick-assignment-2 | QA Material — 2 credits | USD 19.80 | 2 | 200 QMP | 2 | USD 9.90 | USD 0.00 / 0.0% |
quick-assignment-5 | QA Material — 5 credits | USD 39.90 | 5 | 500 QMP | 5 | USD 7.98 | USD 9.60 / 19.4% |
quick-assignment-10 | QA Material — 10 credits | USD 79.90 | 10 | 1,000 QMP | 10 | USD 7.99 | USD 19.10 / 19.3% |
3. Definition of a high-quality Course Learning Material Pack
Depending on the subject, one Course pack may include:
- a primary PDF or HTML learning guide;
- an original worked-example workbook or notebook;
- a formula and terminology reference sheet;
- charts and model-diagnostic figures;
- practice questions with guided solutions;
- a bibliography and rights statement;
- a version number and correction date.
Examples:
- “Differential Equations for Dynamic Modelling” in one pack.
- “Econometric Forecasting” in one pack.
- “Business Data Analytics” inone pack.
- “Stock, Option and Futures Modelling” in one pack.
4. Definition of a high-quality QA Material Pack
Depending on the subject, one QA pack may include:
- estimating an AR(1) forecast from a supplied series;
- explaining how to calculate a Black–Scholes call value from supplied inputs;
- comparing MAE and RMSE for two models;
- diagnosing multicollinearity in one regression;
- constructing one linear-programming formulation;
- interpreting one classification confusion matrix.
Depending on the subject, multiple QA pack may include:
- several unrelated datasets;
- several independent target variables;
- a complete report plus a separate presentation and executable application;
- simultaneous economic forecasting, customer classification, and derivatives valuation;
- multiple questions that can each be delivered and accepted independently.
5. One-credit and multi-credit conversion tables
5.1 Course Learning Material Credit conversion
| Purchased product | Credits / points obtained | Example redemption combination | Balance after full redemption |
|---|---|---|---|
course-1 | 1 Credit / 100 CMP | Course Pack A | 0 CMP |
course-2 | 2 Credits / 200 CMP | Course Packs A + B | 0 CMP |
course-4 | 4 Credits / 400 CMP | Course Packs A + B + C + D | 0 CMP |
course-6 | 6 Credits / 600 CMP | Course Packs A + B + C + D + E + F | 0 CMP after all six selections |
Multi-credit products do not require immediate redemption of every Credit. For example:
Purchase course-6 +600 CMP
Redeem Pack A −100 CMP
Redeem Pack B −100 CMP
Remaining entitlement 400 CMP = 4 Course Credits
5.2 QA Material Credit conversion
| Purchased product | Credits / points obtained | Example redemption combination | Balance after full redemption |
|---|---|---|---|
quick-assignment-1 | 1 Credit / 100 QMP | One option-pricing question | 0 QMP |
quick-assignment-2 | 2 Credits / 200 QMP | One forecasting question + one regression-diagnostic question | 0 QMP |
quick-assignment-5 | 5 Credits / 500 QMP | Five independent questions across the listed subjects | 0 QMP |
quick-assignment-10 | 10 Credits / 1,000 QMP | Ten independent questions or ten eligible redemptions over time | 0 QMP after all ten redemptions |
Example of partial use:
Purchase quick-assignment-10 +1,000 QMP
Redeem three eligible QA packs −300 QMP
Remaining entitlement 700 QMP = 7 QA Credits