When is it cheaper to rent a 22 inch Ironhorse planetary concrete floor grinder on the 28-day rate?

From day 16. At that point the week-and-day composition reaches the $3,500 28-day rate, and the price stops climbing for the rest of the cycle.

Break-even duration

Q: When is it cheaper to rent a 22 inch Ironhorse planetary concrete floor grinder by the week than by the day?

From day 3. 3 days at the $600 day rate would be $1,800, but the weekly rate caps it at $1,200.

Equipment rents on three rates — a day rate, a week rate and a 28-day rate — and the cheapest one changes as the job runs long. This finds the two days where it changes, on a real listing’s real published rates.

22 inch Ironhorse planetary concrete floor grinder

See the listing →

eric collins · Concrete - Floor Grinders

Day: $600
Week: $1,200
28 days: $3,500

Daily stops winning on

day 3

3 days at the day rate would be $1,800. On the week rate it is $1,200.

Weekly stops winning on

day 16

16 days at the day rate would be $9,600. On the 28-day rate it is $3,500.

The working

Whole weeks bill at the week rate; the leftover days bill at the day rate but never add up to more than one extra week; and a whole 28-day cycle never costs more than the 28-day rate. That is the rule, applied one day at a time.

Rental price by duration for 22 inch Ironhorse planetary concrete floor grinder, days 1 to 35
Days	At the day rate	On the ladder	Difference	Rate in play
1	$600	$600	—	day
2	$1,200	$1,200	—	day
3	$1,800	$1,200	you save $600	week
4	$2,400	$1,200	you save $1,200	week
5	$3,000	$1,200	you save $1,800	week
6	$3,600	$1,200	you save $2,400	week
7	$4,200	$1,200	you save $3,000	week
8	$4,800	$1,800	you save $3,000	week
9	$5,400	$2,400	you save $3,000	week
10	$6,000	$2,400	you save $3,600	week
11	$6,600	$2,400	you save $4,200	week
12	$7,200	$2,400	you save $4,800	week
13	$7,800	$2,400	you save $5,400	week
14	$8,400	$2,400	you save $6,000	week
15	$9,000	$3,000	you save $6,000	week
16	$9,600	$3,500	you save $6,100	28-day
17	$10,200	$3,500	you save $6,700	28-day
18	$10,800	$3,500	you save $7,300	28-day
19	$11,400	$3,500	you save $7,900	28-day
20	$12,000	$3,500	you save $8,500	28-day
21	$12,600	$3,500	you save $9,100	28-day
22	$13,200	$3,500	you save $9,700	28-day
23	$13,800	$3,500	you save $10,300	28-day
24	$14,400	$3,500	you save $10,900	28-day
25	$15,000	$3,500	you save $11,500	28-day
26	$15,600	$3,500	you save $12,100	28-day
27	$16,200	$3,500	you save $12,700	28-day
28	$16,800	$3,500	you save $13,300	28-day
29	$17,400	$4,100	you save $13,300	day
30	$18,000	$4,700	you save $13,300	day
31	$18,600	$4,700	you save $13,900	week
32	$19,200	$4,700	you save $14,500	week
33	$19,800	$4,700	you save $15,100	week
34	$20,400	$4,700	you save $15,700	week
35	$21,000	$4,700	you save $16,300	week

Rental rates only. Protection and the marketplace service fee are added on top — see the checkout figure below.

What checkout will quote you

Our pricing service couldn’t be reached just now, so there’s no checkout figure to show. The rate table above is unaffected — it’s the operator’s published card.

Pick a listing

The numbers come from one operator’s published rates, so the tool needs to know whose.

Where these numbers come from

The rates are the operator’s own, read live from their listing. The arithmetic is the same best-price billing engine that produces 2Quip invoices — not a second copy written for this page — run on the industry-standard terms: a 28-day cycle, whole weeks at the week rate, leftover days at the day rate capped at one more week.

An operator can agree different terms on an individual rental, and a long rental bills per 28-day cycle rather than in one lump. So treat this as what the rate card says, and the operator’s quote as what you are agreeing to.