Compare complete purchase options
The cheaper unit price is not necessarily the cheaper order. Bagged material is purchased in whole bags, while this bulk option is priced per cubic yard plus one stated delivery charge. The comparison uses the same required volume for both options.
Measure and calculate
- Enter the required volume and the volume of one bag in cubic feet.
- Replace the example bag price, bulk price and delivery charge with your own quotes.
- Compare the two total-cost modes before interpreting the signed cost difference.
Difference = rounded-up bag count × bag price − (volume ÷ 27 × bulk price + delivery).
A worked example
- Inputs
- You need 54 ft³. Bags hold 2 ft³ and cost $5 each; bulk costs $70/yd³ plus $50 delivery.
- Calculation
Bags: 27 × $5 = $135. Bulk: 2 × $70 + $50 = $190. Difference: $135 − $190 = −$55.- Result
- -55 USD
The negative result means bagged material costs $55 less under these quotes. The sign reverses if the bulk option becomes cheaper. Minimum orders, taxes and extra fees are included only if you account for them in your inputs.
Read the result
| Output or check | What it means for your project |
|---|---|
| Positive cost difference | Bagged cost minus bulk cost is positive: bulk is cheaper by the displayed amount. |
| Negative or zero difference | A negative result favors bags; zero means equal modeled totals. The example −$55 means bags cost $55 less. |
| A quoted total versus a modeled total | The bulk model uses proportional volume pricing plus one delivery charge. Check minimum orders, taxes and other charges before choosing an option. |
Common questions
What does a positive difference mean?
Bagged cost exceeds bulk cost, so bulk is cheaper by the displayed amount under the entered assumptions.
Does the bulk total include a minimum delivery quantity?
No. This model prices the entered volume directly. If the supplier charges a minimum order, compare against that quoted total instead of assuming proportional pricing.