Ah. the old resistive bridge QRP AMU that has had several/many revivals across the years.
This could be a worthwhile way to obtain the tuning capacitors, these are starting to get a little scarce from 'normal' retailers now.
And as a kit these have presumably all the needed parts to make up the set.
Finding the parts for different projects is extra difficult now that Covid-19 restrictions are starting to have their long term effects.
It could be an idea to not include 3rd. party logos and text in our messages?