audi rs5sb value

thinking of replacing my 18 alfa giulia with rs5 sedan to get awd combined with better motor.than 4 cyl alfa. rs5 was only produced for 19 model yr and there are plenty of leftovers at dealerships. stickers from mid 80s to 90s. how much discount should I expect given pandemic and leftover status? im able to get immediate 10k off over the phone with no negotiation. should I try to double that or is that unrealistic?