A. Two, eleven and nine for starters - TEN
B. 30? 40? No,40-30 - 0 ?
C. The Spanish flat - ELEVEN
D. Triumphed . I say - ONE
E. You are about right - THREE
F. No sick retreating on the fast road - MILLION
G. Seeing but direction alters - EIGHT
H. Cat-nap first and snore secondly - DOZEN
I. Sort of hot for us and no more - THOUSAND
J. Its two unknowns randomly cuddling departed - TWENTY.
Add the ten answers - 1001064
Add the digits in that answer - 12
Square that number which should suggest TOTAL - 144 . 144 = a gross. total = gross profit.
Take away the CONTAINER to suggest - Net (rather than gross profit - i don't really understand this bit)
WHAT YOU STARTED WITH IN RETRO!!!(and a hidden apostrophe!!!) - Ten was the 1st answer and Ten bacwards = Net (!)