Jaco will spend a total of $9 x 8 = $<<9*8=72>>72 for his 8 friends' gifts.
He will be left with $100 - $72 = $<<100-72=28>>28 for his mother and father's gift.
So, Jaco's budget for each of his mother and father's gift is $28/2 = $<<28/2=14>>14.
#### 14