Here is something to be aware of if you are planning on getting a pre-order games that have been announced at E3. The savings good be pretty good.
I only checked the canadian site. I assume it's the same in the USA.
Amazon
Save 20% on 2, or 30% on 3 or more qualifying pre-order games, including those announced at E3 Save 20% on 2, or 30% on 3 or more qualifying pre-orders, including those announced at E3. You must have two qualifying pre-order games in your cart and you must enter the promotion code E3SAVE20 at checkout to receive a 20% discount on two pre-order games; or, you must have three or more qualifying pre-order games in your cart and you must must enter the promotion code E3SAVE30 at checkout to receive a 30% discount on three or more pre-order games. Amazon reserves the right to cancel this promotion at any time. Promotion benefit will be applied at checkout. Promotions do not stack. Offer ends at 11:59 PM PST June 18, 2015. Limit 2 units of any one game per customer
http://www.amazon.ca/b/ref=amb_link_433855282_2?ie=UTF8&node=10533376011&pf_rd_m=A3DWYIK6Y9EEQB&pf_rd_s=product-alert&pf_rd_r=0GRTY5TSYGAGKY1QPKR6&pf_rd_t=201&pf_rd_p=2105475142&pf_rd_i=B00JM4F500
And Best Buy
REWARD ZONE™ GAMERS CLUB EXCLUSIVE OFFER
SAVE 20%
when you pre-order 2 or more games online, including games announced at E3!
Offer valid from June 15 - 18 onl
To take advantage of this offer, you’ll need to request your unique promo codes. To get your codes, simply follow the instructions below and you’ll get an email within a few minutes. Each code is valid for one day only.
If you’re not a Reward Zone Gamers Club Member, don’t worry! You can join the club now by clicking the box below.
http://www.bestbuy.ca/en-CA/gamers-club.aspx?icmp=E3-page-mainheaderoffer-en
Looks to me like the Amazon one is better but I know BestBuy price matches.