Can I ask, have you taken into account business rates and such when looking at your "cost per cake".
Are you serious or is this just a thought exercise, just asking.
I am looking at this seriously, and have been looking at small retail units on rightmove, as well as commercial ovens, mixers, fridges, counters on ebay to get some idea of setup cost. I was surprised how cheap rents can be in an area such as Mexborough - and even the central areas of Doncaster.
By cost per cake, I was working out the margin based on raw materials to make the cake. I disregarded all other costs. Then I took the margin per cake (I used a rough figure of average £1 per cake). I then took a rough figure of 300 cupcakes per day (maybe a bit ambitious, but we would also sell other products, cookies, drinks, etc which would earn a margin, but for simplicity . . .). So thats £300 margin per day, take off the biggest cost, wages, then the rest is left for rent, rates, water, heat and light, loan repayment, insurance etc.
Reason I did it this way was because volume sales is the biggest variable, everything else is fixed. So the earned margin on sales is the best starting point to deduct everything else.
I have worked with P&L sheets in my current job, so understand the costs involved in running a business.
Securespark, if you mean the roundabout at the top of the dual carriageway opposite the cop shop, I dont think that cafe is there anymore, the flower shop is still there, but if I remember correctly, the people that owned the cafe also run a cafe further along Doncaster road, a smaller outlet and thats still there. Both were called Geds.
I have discussed at length with my girlfriend about this venture, and I think we agree that the best bet is to start off small as a "cottage" industry with a facebook page, maybe selling at carboots (budget cupcakes lol), and spreading word of mouth, working up to a big launch into a retail premises somewhere.