Companies are affording tons of dollars in online marketing but it will be necessary for them to calculate ROI on every dollar spends. Online marketing would be a best and cheap way to promote your products and services but It will be necessary to understand finance part.
Let say you have a very small budget of 10,000 indian Rs. for online marketing now, question comes how you utilize this sum for your effective ROI. you have lots of option such as SEM, Viral, Email, Affiliate etc....
If you hire a search engine expert or company then also you might not get first spot of your keywords in this budget. But, you can try text based advertising which will definetly give good clicks and sales.
If you select viral or affiliate marketing then might in this budget it will not be effective. Let's try email marketing!!! Humm!! you have a chance to be in touch with lots of people if you have your own mailers you could generate effective ROI from email marketing withing above budget.
Conclusion: What ever your budget identify the best method for online marketing for your effective ROI. Get in touch with experts but do not waste your single dollar in online marketing.