Sorry bro, still can’t really help out too much with this photo. I’d be at AUD$5 min for each pane, maybe $20-$50 for each time the ladder needs to come out, or lift the per pane price for anything super difficult or dirty. This can be a great learning curve for you - just price it! If you win the job, you’ll know if you where too cheap almost as soon as you start, so learn from that for next time. If you lose, call the person responsible for choosing the contractor and ask genuinely for honest feed back about your pricing and overall presentation and why they chose the other business. I did this with my first massive quote and found i was literally a third of the price of the winner, so they didn’t trust me enough; I thanked them for the honest feedback and moved on.
Sorry bro, there’s no quick way around this