help, is it worth this price? MBP

[bb in GA]

i have an opportunity to buy a 15 inch i7 MBP 2011 edition, they want 700...there is a 15 inch i5 for about 500 ( new motherboard)
I need something kinda fast, not a gamer, just business...real estate.
thanks in advance

 

[imsqam]

This comes with a i7 Sandy Bridge 2635M CPU (2nd gen) which is okay, about 30% slower than a current Kaby Lake i7-7500U (7th gen)

http://cpu.userbenchmark.com/Compare/Intel-Core-i7-2635QM-vs-Intel-Core-i7-7500U/m12770vsm171274

I think that for what you are getting it is overpriced, here is a new i7-7500U laptop for $600.
https://www.newegg.com/Product/Product.aspx?Item=9SIA6R45CN1282