I used to put junk mowers behind the shop. Not any more. Folks want to pay next to nothing for an expensive part or a part for an old POS mower they are too cheap to buy a new mower and they sure don't want to pay good money for a part for it. There are other old guys with the mower junkyards they can shop at. I warranty my work so no used parts for paying customers. If a cust wants me to install a used part they bring in i will but no warranty. If you are going to go into business you really need to have a business mindset. Fixing mowers is the easy part. Figuring expenses vs income, keeping track of taxes, insurance, advetising, managing inventory, tool costs, do you pay sales rax on parts up front or setup tax free accounts with vendors and track sales tax. When it is all said and done will you make enough profit to meet your needs. I am lucky i have a small building on my property i work out of so no rent or mortgage payment. If i had a store front i would not make enough profit to be viable.there is a reason the dealers around me charge $100 per hour for labor. Lots of overhead. Before you ever sign a lease. Add up all your monthly expenses, lease payment, utilities, insurance, trash etc. Now honestly calculate your average monthly income minus parts and supplies. Sutract the expenses from the income and will result meet you needs? Will it allow for retirement savings? Medical coverage? This just acratches the surface. Friends of mine have retired and decided to open a business. They all have closed. If you are going to try and open a business be brutally honest with yourself. A charity is a non-profit organization. A mower shop shouldn't be. Just my soapbox $.02 worth.