I think it depends on what YOU are looking to do. I have 3 home businesses (1 I work full time and the other 2 are more like hobbies) but I earn on all 3... One is HealthCare, One is Tea and Goodies, and One just offers Free Stuff to people... If you want a storefront where people will come in a shop then you should look in to a PRODUCT and not a service. I would say food, or clothes would be best for that kind of thing right now...
Also, if you want to open a walk in type store why not open a co-op. We have one in town here that does rather well... The lady that owns it charges $15/month for each small business that joins. They come in and display their wares (candles, crafts, teas, purses, whatever) and then she gets 2% of the sales that come from the co-op... The last time I was in there she had about 25 little booths all set up with stuff... She also sold coffie and cookies. $15 X 25 = $375 gaurenteed income. Plus..
at 12:16 PM on May. 12, 2009