Break-even duration

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.

Floor Grinder with Carbide Scraper

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Simon Equipment Rentals · Grinders - Floor

Day
$78
Week
$155
28 days
$620

Daily stops winning on

day 2

2 days at the day rate would be $156. On the week rate it is $155.

Weekly stops winning on

day 23

23 days at the day rate would be $1,794. On the 28-day rate it is $620.

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 Floor Grinder with Carbide Scraper, days 1 to 35
DaysAt the day rateOn the ladderDifferenceRate in play
1$78$78—day
2$156$155you save $1week
3$234$155you save $79week
4$312$155you save $157week
5$390$155you save $235week
6$468$155you save $313week
7$546$155you save $391week
8$624$233you save $391week
9$702$310you save $392week
10$780$310you save $470week
11$858$310you save $548week
12$936$310you save $626week
13$1,014$310you save $704week
14$1,092$310you save $782week
15$1,170$388you save $782week
16$1,248$465you save $783week
17$1,326$465you save $861week
18$1,404$465you save $939week
19$1,482$465you save $1,017week
20$1,560$465you save $1,095week
21$1,638$465you save $1,173week
22$1,716$543you save $1,173week
23$1,794$620you save $1,17428-day
24$1,872$620you save $1,25228-day
25$1,950$620you save $1,33028-day
26$2,028$620you save $1,40828-day
27$2,106$620you save $1,48628-day
28$2,184$620you save $1,56428-day
29$2,262$698you save $1,564day
30$2,340$775you save $1,565week
31$2,418$775you save $1,643week
32$2,496$775you save $1,721week
33$2,574$775you save $1,799week
34$2,652$775you save $1,877week
35$2,730$775you save $1,955week

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

What checkout will quote you

Rental · 23 days
$620
Rental protection (RPP)
$93
Service fee
$62
Estimated total
$775

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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.