Bahn afaik isn't allowed to sell you tickets when the start and destination are within a regional operator, and my regional operator (to get to work) doesn't have a web shop.
The bus drivers are comically confused when I try to buy "einen Viererkahrte zu Aachen, drei Stück" so that I don't have to deal with it every other office day (this I can pay with a convenient 50€ bill and lasts about a month, give or take). Then I still have to stamp them per trip and will be last in line for a seat, but at least I don't have to bother the driver most days.
The bus drivers are comically confused when I try to buy "einen Viererkahrte zu Aachen, drei Stück" so that I don't have to deal with it every other office day (this I can pay with a convenient 50€ bill and lasts about a month, give or take). Then I still have to stamp them per trip and will be last in line for a seat, but at least I don't have to bother the driver most days.