There are 3 main components to how much it will cost you to produce a rhinestone transfer, whether you decide to go the wholes rhinestone transfer business route or sell finished rhinestone t-shirts or decals. Those components are OVERHEAD, LABOR and MATERIALS.
The cost of keeping your doors open, the lights on and any part of running your rhinestone business OTHER than labor and supply materials falls into the "overhead" category. You are going to have to do your own estimations of overhead, because there is no way for us to tell what those bills will be where you are. Or whether your working from home, a small office, renting space, paying taxes, getting pest control done, working by candle light or in a high rise suite in downtown city, USA. So in addition to overhead..
Labor costs are another area where you'll have to add in your own numbers. $12/hour for a machine operator in the custom apparel business is a great deal in many part of the country, but depending on your location anywhere from minimum wage way up the scale might be possible. Your cost may also vary depending on if you have someone just run the CAMS machine and heat press, or if you need creative talent as well.. OR if you are going to do it all yourself. Just jot down how much you think your labor cost is per hour and subtract if from our materials numbers below.
There are really only 2 supply items that you will consume with every rhinestone transfer you sell or use. Hotfix Rhinestones and Transfer Paper.
Transfer Tape or Transfer Paper as it's sometimes called, is the ScotchTape-like material that your rhinestones are stuck to, so you use some every time you produce a transfer. Once you heat press the transfer onto a t shirt or decal material, you will simply peel that away from the completed product.