Construction costs are currently skyrocketing

We are also roughly in the same price range, including connection, hybrid inverter, and scaffolding, etc. So I actually find it quite okay.
We have 25k all in, minus about 6900 for the storage = 18.1 / 12.45 kWp = 1454 per kWp fully installed.
Yesterday someone told me that this was too expensive.

A few weeks ago we had 13.12 kWp installed on the roof (flat roof), also by the electrician of the general contractor. We have just started with the interior work.
We pay 1320€ per kWp without storage (and also without hybrid inverter). Modules are from Astro Energy, inverter from Solax

There were times when people overlooked the blemish in the door because they had done it themselves. For me, the question never even arose; I am simply not willing to pay 50 EUR/net labor cost for the floor layer who ultimately does nothing other than click the laminate or engineered parquet into place. Sure, back then one could have borrowed 50,000 EUR more. But the money has to be paid back, as you already said...

But now we are in a thread where people are complaining about soaring construction costs and craftsmen who put fantasy prices in their offers. This is of course also because many builders go into debt up to their eyeballs just to never have to touch a shovel. The craftsmen naturally take advantage of this "need," who can blame them.

Craftsmen have often looked at me quite puzzled when I said, "I am the paver..." or "Yes, I’m doing the interior finishing including doors myself..." or "No, we’re taking the oven from our old kitchen..." or (my personal favorite from yesterday) "for 500 EUR I would have had that (furniture for the living room) assembled..."

This is nonsense. If you shovel gravel for 2 or 3 weeks, nothing wears out at all. If that were the case, a professional couldn’t move after 3 years. Wear and tear sets in after decades. You also don’t get tennis elbow if you work 10 hours on the computer for 2 weeks or play tennis 3 times.

Regardless of whether there is wear after such a short time or not, one can already be worn out enough from decades of sports, for example, or one simply wants a proper job done, e.g., with a suitable slope away from the house and also properly compacted so that the paving doesn’t settle unevenly. Some terraces you see sometimes look like a bumpy track in comparison. I’d rather have someone who knows what they’re doing do it and just pay for it.

There were times when people overlooked the dent in the door because they did it themselves. For me, the question never really arose, I’m not willing to pay 50 EUR/net labor cost for the floor installer who ultimately does nothing more than clicking in the laminate or engineered wood flooring. Sure, back then one could have borrowed 50,000 EUR more. But you have to pay back the money, as you already said... Now, however, we are in a thread where people complain about soaring construction costs and craftsmen who write fantasy prices in their offers. This is of course also because many builders get heavily into debt just so they never have to pick up a shovel. The craftsman naturally takes advantage of this "need," who can blame him. Craftsmen have often looked at me quite bewildered when I said, "I am the paver..." or "Yes, I’m doing the interior finishing including doors myself..." or "No, we’re taking the oven from our old kitchen..." or (my personal favorite from yesterday) "For 500 EUR, I would have had that (living room furniture) assembled..."

It ultimately depends on how high your own net wage is and how quickly you can perform tasks. Usually, it takes twice as long and if you have around 35 euros net, that would be 70 euros net for the craftsman. You can get quite a lot done for that...

Yes. But then you don't complain about high prices. And that is the topic here. Complaining about craftsmen who charge high prices.

Apart from that, it's not rocket science to create a slope. And about professionals... I can show you 3 or 4 terraces in my immediate vicinity that were made by professionals and have no slope at all ;)

It ultimately depends on how high your own net salary is and how quickly you can perform work. Usually, it takes twice as long and if you earn around 35 euros net, that would be 70 euros net for the craftsman. You can definitely get quite a bit done for that...

This back-of-the-envelope calculation only works if you do overtime to earn the money additionally or take time off to perform the work.
If you do it in your free time, you can count it as a hobby and actually save the money.