Need Parentheses Help

[mrpearl11]

I need parentheses help. I keep getting the error that I have one or more extra closed parentheses.

Here is my formula:
=IF(AZ5*.8)+AO5<50, (AZ5*.8)+AO5*0.11, IF(AZ5*.8)+AO5<1000, 5.50+((AZ5*.8)+AO5-50)*0.06, 6+57+((AZ5*.8)+AO5 -1000)*0.02)

What I am trying to do is:
Give 20% off AZ.
Add AO to AZ with 20% off.
if AZ+AO is less than 50 then multiply the sum of AZ*.8 plus AO by .11
if AZ+AO is less than 1000 then multiply the sum of AZ*.8 plus AO by .06
if AZ+AO is more than than 1000 then multiply the sum of AZ*.8 plus AO by .02

Any help would be appreciated.

 

[mrpearl11]

this is what i am comparing it to.

http://pages.ebay.com/sellerinformation/news/Feecalculator.html#

when you use Category: Other
Listing Format: Fixed Price
Final Sales Price: $1200

Domestic Shipping: Standard: $17.04
Discount: Top Rated Seller Discount: 20%

Total Estimated Fees: $54.04
I don't care about insertion fee in formula so i took off .50 to give me $53.54.

You and I came up with $61.12 Ebay came up with $53.54.