I have recently purchase this tab from snapdeal.com and I can tell you what problems you could face, if you buy these tab.
1-: Batery backup of the tab is too weak.100% battery, drains within 3 to 4 hours.
2-Clearity of camera is not that good.
Some advantage of buying these tab
1-This tab is at cheaper price as compare with other tabs.
2-Main advantage about this tab its calling feature.Most of the tab in the market doesnt have calling feature.If you are looking for a calling tab and which suits your budget, then you can go for this.