450W-500W solar panels are as low as 52€ here in Germany if you buy a couple of them. Batteries are also very affordable and I look forward to them getting a lot cheaper soon, thanks to Sodium-Ion.
The panel price doesn't matter. It's the installation and the surroundings (electrical setup, converter, battery) that determine the price nowadays.
The price of panels is falling so fast I don’t think anyone truly understands.
I paid nearly double that for our 450w panels 18 months ago.