Petrol is about US$6.30 per gallon.
Car prices are significantly higher than in the US.
A4 prices run from US$48K (1.8TFSI FWD) to US$84K (3.2FSI quattro, the only A4 quattro available). A5 is about US$91K (3.2FSI quattro).
You might want to look at an A3, the 2.0TFSI quattro 6speed is US$49K, the 3.2FSI qauttro is US$63K. The S3 is US$63K! All these are base prices before options.

07 A3 Sportback 2.0T Quattro 6spd Manual
04 Allroad 2.7T 6spd Manual (sold)
95.5 S6 Avant (sold, sob)
91 Coupe Quattro (sold)