How to rent more than 4000 referrals and costs

HOW TO RENT MORE THAN 4000 REFERRALS AND COSTS

See the renting limits from the help page:
http://www.neobux.com/?u=a

Members with an Ultimate pack can use the
rental queue which you can queue 150
after the normal rented limitations.
In this case each referral will have a cost of $0.60 plus an
additional $0.01 for each 100 referrals that the
user has above the limit to a maximum of $1.20.
This increased amount is only for rentals and not for extensions.


For example,
$0.60 for each ref from 4000~4099
$0.61 for each ref from 4100~4199
$0.62 for each ref from 4200~4299
$0.63 for each ref from 4300~4399
$0.64 for each ref from 4400~4499
$0.65 for each ref from 4500~4599

On and on until...
always $1.20 for each ref after 10000

After you have reached 4000 ref
Using the rental queue to rent 150 ref
150 * [0.60 + ((4000-4000) x 0.01)] = $90
Total rental refs = 4150

Using the rental queue to rent another 150
150 * [0.60 + ((4150-4000) x 0.01)] = $91.50
Total rental refs = 4300

Using the rental queue to rent another 150
150 * [0.60 + ((4300-4000) x 0.01)] = $94.50
Total rental refs = 4450

On and on until you reach above 10000 refs
then each ref will always cost $1.20 each.

Using the rental queue for another 150
150 * [0.60 + ((10000-4000) x 0.01)] = $180


Ultimate renewal cost per each ref doesn't not change:
30 days = $0.23
60 days = $0.43
90 days = $0.59
150 days = $0.90
240 days = $1.34