Junglee is just an aggregator for various deals. What you see there are the prices of the same item from various online retailers. There are also pricing issues such as the prices from amazon.com which directly convert the USD rates to INR and mention shipping and customs extra. Another issue I found was that of other retailers mentioning 'taxes extra' in their deals which increases the cost of buying and thus the cheapest option recommended by Junglee may not be the cheapest in the end.
As the site is just starting, I hope these issues will be resolved.
Since Junglee is an aggregator, there are no coupons to be used and the deals can also be found on the individual sites. This thread will be useful if/when they start having discounts/coupons for users buying from the retailers via Junglee.com