Should I buy Lenovo Laptop?

Ok this is the name & model number Lenovo B50-70 Note book-59-434775

specification:
4th Gen i7
8GB RAM
1TB HDD
2GB graph
os: windows 8
it comes with a resonable price that y thinking of buying.

its available for 53K(Indian money)

i saw it in a website(popular websites which offers it.

is it the original model that lenovo manufactures?
is it available in licensed lenovo showrooms?
bcz i went to lenovo website under B50 series it does not explain much(or i don't understand) please please give an good answer. I'm kind of in a hurry to buy a laptop so please

Yes it is about 53000 rs.
Has a dual core i7-4510U
Has a fingerprint sensor
has the ram and HDD described
has R5 M230 graphics when on AC power and HD 4400 on DC

The only issue is that the graphics card should not be in the system.
http://www.videocardbenchmark.net/gpu_list.php
R5 M230 is below hd 4400 by this.

http://www.game-debate.com/...400-mobile
Says the graphics card is 23% stronger than the HD4400 which is not very much.

And this says HD 4400 is rank 286, where R5 M230 is a little better at rank #236
http://www.notebookcheck.net/...849.0.html

Basically, you do not get much in graphics power out of the graphics card.

It is an original model. Lenovo, Dell, HP, Toshiba, Acer do not manufacture laptops pretty much.
Asus and MSI are manufacturers.
http://www.xoticpc.com/laptop-manufacturers-really-makes-laptops-ip-11.html
Lenovo does have a B Series
http://shop.lenovo.com/.../b-series/
They are below a Thinkpad and do not have Trackpoint but still called a business model.
They were not sold directly by Lenovo in the USA as only in retail store re-sale, and is more of a market test model the way I see it.
The only issue is understanding that the i7 is still a dual core and only a little better than an i5 4th gen U suffix, and the graphics card is only a little better than Intel integrated.

Add: They make shopping for laptops in India difficult because they do not put the most important information in the description so you have to dig into each detail. In Lenovo, they often use the NVidia code name that needs google to figure out the graphics IC.
I saw at your price you can at least get a GT 740M and i5-4200M of similar cpu performance and better graphics.

CPU Benchmark:
http://www.cpubenchmark.net/...u_list.php
graphics power can use all three listed to estimate position.
If a laptop has 4GB RAM as 1x4GB and an open slot, laptop ram is not expensive but the stores in India are selling some wrong ones at 1.5 Volt instead of 1.35V.

You may want to look closer and decide what features are important.
Lenovo Ideapad is a good brand, but G series is the same as Pavilion and Inspiron and anything by Acer.