What is Paypal Fee in Adengage payment ?

I earned $21.3 on February. Today I get my payment. But They prior take $0.42 as Paypal Fee. What is this Paypal fee ? In in Payment history in paypal, I receive $20.88 with no fee. Please explain what is this? Is this Cheating ?


Payments:
PayPal [xxxxxxxxxxxxxxxxxxxxxx] 20.88


PayPal Fees Paypal fees 0.42


Balance $0.00



My paypal Transaction details below:


Transaction Details

Payment Received (Unique Transaction ID #xxxxxxxxxxxxx)

Business Name:
AdEngage, Inc.
Buyer Email:

Payment Sent to:



Business Contact Information

Customer Service URL: http://www.adengage.com
Customer Service Email:
Customer Service Phone: 310-640-0101

Amount received:
$20.88 USD
Fee:
$0.00 USD
Total:
$20.88 USD

Date:
13-Mar-2009
Time:
15:45:57 PDT
Status:
Completed

Subject:
AdEngage, Inc.
Custom Note:
the AdEngage Team.
Shipping Address:
No Address Provided

Payments without a shipping address are not covered by PayPal's seller protection policies and programs. Learn More

Payment Type:
Instant

 

When you receive or send a payment PayPal charges a specific fees.

Please see this https://www.paypal.com/cgi-bin/webscr?cmd=_display-receiving-fees-outside&countries

 

But I never charged for receiving payment from Paypopup,Clicksor,Credirburner,GlobalInteractive........?

I have personal paypal account.

 

Try contacting PayPal or AdEngage and asking them, but it's not worth wasting your time just for couple of cents.

 

Those probably send funds using the mass pay option which charges the sender a fixed $1 fee and no fees to the reciever.