If you search google for presario c700 ac adapter you may find a better price than this:





Presario 700 AC Adapter

Description:
15 TO 24 Volt 75 Watt AC Adapter

Availability:
IN STOCK

List Price:
$79.99

Savings:
$27.04(34%)

Your Price:
$52.95



from here: http://www.ebatts.com/compaq_presario-700_laptop_accessories.aspx


You can also look into generics, they may be cheaper.