one company offered me money making complete video guide package for $10k and they told me if I bought this ownership I can sell this each package for $200 very easily. Guy's I need your ideas because my opinion is buy this complete ownership by getting loan.
If they offer you to develop the package for $10k why you need to buy back as you are the actual developer.
Yes I'm developer online applications but this is windows application They provide all contents , marketing methods etc.. all
... it's about how many you can sell, how quickly, at what cost. Really valuing the investment -- based on some assumptions, like your real "cost of capital" (what will sinking the $10K cost you, including the interest and the risk), projected sales and cost of sales -- using a method called "discounted cash-flow" analysis is pretty straightforward, but would quite a long post. Google "DCF valuation," or try this page to get you started: http://www.investopedia.com/terms/d/dcf.asp (I've actually thought about turning the spreadsheet I use into an info product, but I'm never really sure what demand would be.)