Thanks djpadavona for sharing your view. Actually I have some uncertainty. The stock price in my own country and in the US or in the European countries are very different. So if I can't do region specific pricing I will have troubles. So I might have to disable online payment for local customers. When all these comes as complex issues (as I don't want to sale cheaper than other local stock agencies are selling, others will not like it), going for a standard stock service becomes difficult. I might do a parallel site for networking with others. Let's see.     

Jo Ann Snover Thanks for your thoughts. Your point is correct regarding upgrade and StockBoxPhoto's feel. Will check PhotoShelter's offer.

Thanks 4seasons, your positive view regarding Ktools will help. Still not sure though if rental plans will be the best for me.

Looking for a stock photo web system for good look and feel and maximum flexibility. Found two systems like Ktool's Photostore and StockBoxPhoto. Both the system has many visible common features but need to know the hidden differences.

The criteria of evaluation might be:

1. Default look and feel.
2. Versatility, efficiency and speed of search option.
3. Search Engine Optimization performance
4. Limitations of image size, numbers etc.
5. International currency selection.
6. Security.
7. Trend and the Future

Thanks.