Dell Inspiron 15″ 5000- i7-8gen 8gb ram 1tb hdd $617+tax

Bought this from Dell member purchase program (available to everyone) . Seemed like a good deal because of 8th gen i7. Ram and hdd should be upgradable from what I understand.
2% cashback from cashback website
10% off code from unidays
$18 in Dell advantage (30 day waiting period) (free to join)
Total $617+ tax.
Link : http://www.dell.com/en-us/member/…cwdar0009h
Specs
I7-8gen
8gb ram
Intel graphics 620
1tb hdd