I would say depending on the purpose, you can get some cheaper stuff. Like I'm not gonna expect people at a college party to make rum and cokes with the nice stuff. And they're just shooting back tequila for fun.
But I also still wouldn't get bottom shelf. Its still worth avoiding that. I worked at an Albertsons liquor store back in about 2010. You could get a handle of Albertsons brand liquor for $10. Was always tempted to get some just to see how bad it is, but could never force myself to do it.