That's way over-priced..!
Even with sport car like Ferrari / Lambo, their lightweight version of the same car are about 200-220lbs less from it's original low weight.
A 2000 996 tip is around $20k-$30k here in the US, but look at the cost for rental with the 2nd link you provided...?? $100 sounds fine.. but WTX with that $423.84 surcharge?