Rare 71 340 carb ?

[anlauto]

https://www.kijiji.ca/v-engines-and-engine-parts/london/carburetter-carter-thermo-quad-for-340-70-or-71/1537699874

Is this a correct 71 340 carb ? Aren't they worth more than $100 USD ?

[6bblgt]

not a correct 1971 340 Carter Thermoquad

for 1971 the screws in the base are at an angle 

[anlauto]

I really didn't think it was...too good to be true...