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Plans,  Monthly - 50.0$  
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100.0$  
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250.0$  
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500.0$  
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Plans Annually, save 20% - 480.0$ 
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960.0$
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2,400.0$  
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4,800.0$ 
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7 DAYs FREE TRIAL - FREE TRIAL
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FREE TRIAL
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API Credits per Month - 100,000 300,000 1,000,000 2,500,000

 ONLINE WEBSITE FEATURES
(All restrictions for online website do not affect the backlink APIs, for query large referring domains we recommend  use the backlink APIs)*

Domains per month/day 90/3 1,500/50 3,000/100 7,500/250 15,000/500
URLs per month/day 9K/300 150K/5,000 300K/10,000 750K/25,000 1.5M/50,000
Max referring domains  per Query
300 10,000 50,000 100,000 1,000,000
Max inbound backlinks per Query 30,000 1,000,000 5,000,000 10,000,000 100,000,000
Backlink Monitor crawls per Month
- 150,000 300,000 750,000 1,500,000
Submit Known Backlinks per Month - 50,000 100,000 250,000 500,000
Downloadable referring domains per Time - 10,000 20,000 20,000 50,000
Total downloadable referring domains -  1,000,000 3,000,000 10,000,000 25,000,000
Total downloadable backlinks - 16,000,000 48,000,000 160,000,000 400,000,000

BACKLINK API FEATURES
(The follow values are estimated values based on MASK=011, it depend how you used and what params you set, more details see the API Price List)*

API credits - 100,000 300,000 1,000,000 2,500,000
Total requests
- 50,000 150,000 500,000 1,250,000
Total referring domains -  1,000,000 3,000,000 10,000,000 25,000,000
Total backlinks - 16,000,000 48,000,000 160,000,000 400,000,000

DETAILED API PRICE LISTS
(The [Item Number] on your paypal receipt is your Auth Access ID, If you have any questions, please contact us.)*

Mask ID
RELATED
Data  type request costs(it will round up, the min request cost is 1.0 credits)
000 !rank, page rank Fixed costs: 1.0 credit/url(domain) (cached database)
100 meta all:Referring Domains, Inbound Links, Dedicated IPs, IPv4 Subnets, Home Pages, No Follows, Text Links, Referring Keywords, Referring Countries, Referring TLDs. Fixed costs:  5.0 credits (cached database)
101 short meta: rank, referring domains count, backlinks count, ip count Fixed costs:  2.0 credits (cached database)
111 meta, referring domains, backlinks from each referring domain(not sorted)
(export all links, include new discovered)
Minimum costs: 5.0 credits, variable, round up
 (0.1 credits  per referring domain(with top ranked 16 backlinks))
The Costs = MAX(5.0, RETURN_COUNT * 0.1)
The price is related to the parameter [MAXPERPAGE]
011 referring domains, backlinks from each referring domain,(not sorted)
(export all links, include new discovered)
Minimum costs: 2.0 credits, variable, round up
 (0.1 credits  per referring domain(with top ranked 16 backlinks))
The Costs = MAX(2.0, RETURN_COUNT * 0.1)
The price is related the parameter [MAXPERPAGE]
222 Top ranked pages
(max top 1000, sorted by page rank) (contains: rank, referring domains count, backlinks count)
Minimum costs: 5.0 credits, variable, round up
 (0.1 credits  per returned ranked page, and 0.001 credits  per sorted ranked page. )
The Costs = 
        MAX(5.0, 
                    RETURN_COUNT * 0.1 +
                    MIN(FOUND_COUNT, MAXFORSORT) * 0.001)

The price is related to the parameters [MAXFORSORT], [MAXPERPAGE]
if the records count of the query result in database is less than MAXFORSORT, it will charge base on the real count we found.
if it is great than MAXFORSORT, it will only do sorting on the first MAXFORSORT pages.
if the parameter MAXFORSORT is too small, it will missing data in returned results.
the default value is 100 * MAXPERPAGE, 90% of domains in database(300 Millions) don't have more than 10,000 ranked pages,
but there still are millions of domains have more than 10,000 ranked pages.
The higher the value you set, the better the accuracy you get.
333 Top ranked referring domains
(max top 1000, sorted by domain rank) (contains: rank, top 16 backlinks from each referring domain. if query domain not page, it may get more than 16 backlinks)
Minimum costs: 5.0 credits, variable, round up
 (0.1 credits  per returned referring domain(with top ranked 16 backlinks, if domain check will great than 16)), and 0.01 per sorted referring domain.
The Costs = 
        MAX(5.0, 
                    RETURN_COUNT * 0.1 +
                    MIN(FOUND_COUNT, MAXFORSORT) * 0.01)

The price is related to the parameters [MAXFORSORT],[MAXPERPAGE]
if the records count of the query result in database less than MAXFORSORT, it will charge base on the real count we found.
if it is great than MAXFORSORT, it will only do sorting on the first MAXFORSORT referring domains.
if the parameter MAXFORSORT is too small, it will missing data in returned results.
the default value is 10 * MAXPERPAGE,90% of domains in database(300 Millions) don't have more than 1,000 referring domains,
but there still are millions of domains have more than 1,000 referring domains.
The higher the value you set, the better the accuracy you get.
334 Backlinks from special referring domain
(max top 1000, sorted by domain rank) (contains: rank, top 16 backlinks from each referring domain. if query domain not page, it may get more than 16 backlinks)
Minimum costs: 5.0 credits, variable, round up
 ( 0.01 credits  per searched referring domains)
The Costs =   MAX(5.0, 
                    MIN(FOUND_COUNT, MAXFORSORT) * 0.01)
he price is related to the parameters [MAXFORSORT]
if the records count of the query result in database less than MAXFORSORT, it will charge base on the real count we found.
if it is great than MAXFORSORT, it will only query  on the first MAXFORSORT referring domains.
if the parameter MAXFORSORT is too small, it will missing data in returned results.
the default value is 10,000.
The higher the value you set, the better the accuracy you get.
666 Top ranked backlinks
(max top 1000, sorted by page rank) (contains: rank, url, anchor, date)
Minimum costs: 5.0 credits, variable, round up
 (0.1 credits  per returned backlink and 0.01 per sorted backlink. )
The Costs = 
        MAX(5.0, 
                    RETURN_COUNT * 0.1 +
                    MIN(FOUND_COUNT, MAXFORSORT) * 0.01)

The price is related to the parameters [MAXFORSORT],[MAXPERPAGE]
if the records count of the query result in database less than MAXFORSORT, it will charge base on the real count we found.
if it is great than MAXFORSORT, it will only do sorting on the first MAXFORSORT backlinks.
if the parameter MAXFORSORT is too small, it will missing data in returned results.
the default value is 100 * MAXPERPAGE,90% of domains in database(300 Millions) don't have more than 10,000 backlinks,
but there still are millions of domains have more than 10,000 backlinks.
The higher the value you set, the better the accuracy you get.
444 Just discovered/New Backlinks Minimum costs: 2.0 credits, variable, round up
 (0.2 credits  per referring domain(with top ranked 16 backlinks))
The Costs = MAX(2.0, RETURN_COUNT * 0.2)
The price is related the parameter [MAXPERPAGE]
555 top 100 pages for keywords(anchor text) fixed 2.0 creditsts
999 !rank, page !rank,meta Minimum costs: 10.0 credits (refresh cache, recalculate)
 (variable,  10.0 * pow(2, rank) )