This depends on your area, how far you are willing to travel to do a job and how much you need for your 'living'. I am retired and my living expenses are fairly small. I am not trying to raise children, my vehicle is paid off, my mortgage is small and my cell phone is a fairly simple and relatively cheap plan. I retired early and before SS cut in, in most months I could cover household expenses without needing to grab every job I saw to try to make it work. The economy has changed and there are fewer shops and more shoppers in my area. Thank goodness this now needs only to be a supplement to SS. I am not willing to travel great distances to find work.
Typically those who are making a living at this do a lot more travelling than I do and are setting up routes that include a fair number of low paying jobs that are worthwhile as part of an overall route. It does not make economic sense to drive a 20 mile round trip for a $5 shop, but if it is only a 2 mile detour on a route it can be worthwhile.
Don't expect to make a lot of money doing this, but experience and organization can make it profitable.