You're probably making less money than you think you are because you're ignoring most of the time costs in acquisition and client relationship maintenance. For example, the time taken for a 100 euro launch page is not 'max. 15 minutes' - it's 15 minutes development time + whatever time it takes you to persuade the client that it's necessary, time to write the necessary copy, time to source artwork, time to agree it with the client, time to put it online, time to update the client on it's performance, time to export the list of gathered email addresses, and so on.
In total I could imagine that 100 euros covers up to about 10 hours work if the client wants to change a few things along the way. I don't imagine your time is only worth 10 euros an hour.
This is a fundamental problem with scaling a consulting business - it might feel like you've earned a lot of money for a tiny amount of work, but the reality is that all the time you spent getting and managing that work means it's not very valuable.
Well, the launch page part is actually quite easy to sell. I propose it if the client is a new business.
It takes about 10 minutes to persuade (in experience), i choose the layout and ask for a picture and a small title + subtext. There isn't a lot to change on the launch page (the layout is almost solely the picture in full)
The changes by the client are usually for the website, but that's a different package. There i create max. 3 first page designs, then i create the whole website. (included according our talk). Then for reasonable changes, i check wether it's part of the package or is it stuff that we didn't talk about that requires >20 minutes of work (eg. new features)... I'm quite clear on that upfront.
The launch page is just an extra income that takes max 40 minutes (talk + create + publish + text email to subscribers).
Then again, i'm also waiting to raise prices untill i get (more) busy with projects to create.
In total I could imagine that 100 euros covers up to about 10 hours work if the client wants to change a few things along the way. I don't imagine your time is only worth 10 euros an hour.
This is a fundamental problem with scaling a consulting business - it might feel like you've earned a lot of money for a tiny amount of work, but the reality is that all the time you spent getting and managing that work means it's not very valuable.