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 + Carbide Block (Block purchased separately- 3 blocks = $66+ tax)

See the listing →

Simon Equipment Rentals · Concrete - Floor Grinders

Day
$84
Week
$250
28 days
$750

Daily stops winning on

day 3

3 days at the day rate would be $252. On the week rate it is $250.

Weekly stops winning on

day 17

17 days at the day rate would be $1,428. On the 28-day rate it is $750.

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 + Carbide Block (Block purchased separately- 3 blocks = $66+ tax), days 1 to 35
DaysAt the day rateOn the ladderDifferenceRate in play
1$84$84—day
2$168$168—day
3$252$250you save $2week
4$336$250you save $86week
5$420$250you save $170week
6$504$250you save $254week
7$588$250you save $338week
8$672$334you save $338week
9$756$418you save $338week
10$840$500you save $340week
11$924$500you save $424week
12$1,008$500you save $508week
13$1,092$500you save $592week
14$1,176$500you save $676week
15$1,260$584you save $676week
16$1,344$668you save $676week
17$1,428$750you save $67828-day
18$1,512$750you save $76228-day
19$1,596$750you save $84628-day
20$1,680$750you save $93028-day
21$1,764$750you save $1,01428-day
22$1,848$750you save $1,09828-day
23$1,932$750you save $1,18228-day
24$2,016$750you save $1,26628-day
25$2,100$750you save $1,35028-day
26$2,184$750you save $1,43428-day
27$2,268$750you save $1,51828-day
28$2,352$750you save $1,60228-day
29$2,436$834you save $1,602day
30$2,520$918you save $1,602day
31$2,604$1,000you save $1,604week
32$2,688$1,000you save $1,688week
33$2,772$1,000you save $1,772week
34$2,856$1,000you save $1,856week
35$2,940$1,000you save $1,940week

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

What checkout will quote you

Rental · 17 days
$750
Rental protection (RPP)
$112.50
Service fee
$75
Estimated total
$937.50

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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.