You will receive the following perks with your applicable purchase of credits.  For example, if you purchase $40 in credits, scroll down to the line for $40, you get that line and every line above it :)

$5.00 -- Durden Mapping Credit
$10.00 -- Achievement Reveal (60 Days) + Above
$15.00 -- 2x Durden Mapping Credit + Above
$20.00 -- DFP Stacking (60 Days), Pick Pocket Proficiency Perk (30 Days) + Above
$25.00 -- Durden Mapping Credit + Above
$30.00 -- Achievement Reveal (60 Days) + Above
$35.00 -- Durden Mapping Credit + Above
$40.00 -- Super VIP + Above
$45.00 -- Durden Mapping Credit + Above
$50.00 -- Achievement Reveal (60 Days) + Above
$55.00 -- Durden Mapping Credit + Above
$60.00 -- Achievement Reveal (60 Days) + Above
$65.00 -- Super VIP + Above
$70.00 -- DFP Stacking (60 Days) + Above
$75.00 -- Organized Crime Proficiency Perk (30 Days) + Above
$80.00 -- Achievement Reveal (60 Days) + Above
$85.00 -- Durden Mapping Credit + Above
$90.00 -- Pick Pocket Proficiency Perk (30 Days) + Above
$95.00 -- Achievement Reveal (60 Days) + Above
$100.00 -- Organized Crime Proficiency Perk (30 Days) + Above
$105.00 -- Durden Mapping Credit + Above
$110.00 -- DFP Stacking (60 Days) + Above
$115.00 -- Achievement Reveal (60 Days) + Above
$115.00 -- Super VIP + Above
$125.00 -- Corrupt Agent with Double Units - This Corrupt Agent starts with 1300 units of cocaine. + Above
$130.00 -- Bodyguard Upkeep Perk (365 Days) + Above
$135.00 -- Super VIP + Above
$140.00 -- Organized Crime Proficiency Perk (30 Days) + Above
$145.00 -- DFP Stacking (60 Days) + Above
$150.00 -- Corrupt Agent with Double Units - This Corrupt Agent starts with 1300 units of cocaine. + Above

Timer perks are perks you can buy with credits, the bulk of the perks above are ones that you can't buy and are only available through promotions or events. :)