How to Make Homemade Bitters
thekitchn.com
thekitchn.com
Unlike things like home distilling/brewing/winemaking its fairly easy to get to a point where the output is both cheaper and as good a quality as commercial offerings.
[edit] My favorite recipe from last year: https://www.chowhound.com/recipes/sunshine-bitters-11279
Things like homemade bitters are in the more feasible range for most people.
I can buy 50% vodka fairly easily, but here the 96% neutral alcohol seems only to be available through specialist liquor stores, with inconvenient prices and delivery.
There are also bitters recipes that use whiskeys that are quite good as well.