A delivery every four weeks occurs every 28 days, so it does not match calendar-month billing. Use the stated interval when estimating annual spending.
What to check
| Check | What to verify |
|---|---|
| Interval | Record days between deliveries. |
| Annual estimate | Multiply recurring charge by 365 divided by interval. |
| Calendar | Check actual scheduled shipment dates. |
Use this checklist for your own comparison
Record product details, quotes or unanswered questions. Notes stay in this tab; download them before leaving.
Record days between deliveries.
Multiply recurring charge by 365 divided by interval.
Check actual scheduled shipment dates.
A practical example
At an illustrative $70 every 28 days, the annualized amount is about $912.50 before other charges.
Before you decide
Calling a four-week bill monthly understates the frequency over a full year.
For the broader task, see Compare food cost per day.
Reference and scope
FTC: online shopping provides background for this topic. Examples and checklists are original planning tools; no current seller prices or policies are asserted. The comparison prompts and examples above are practical planning aids, not reports of product testing.