How many copies of a game can I trade in?
You are allowed to trade in 4 copies of the same game (same system) within a rolling 30 day period.
What do I need to trade in an older console?
The console, power cable, av cable, and controller. Sometimes they don't care about USB charge cable but ymmv. 3DS XL trade would be console, charger, and stylus. Some have reported being charged a refurb fee for missing the stylus, but again ymmv (answer stolen from anarchyburger)
FAQ will be entered when those questions get asked frequently.
Does the Pro Membership B2G1 coupon apply to only games, or accessories as well?
The coupon applies to both games and accessories, per the wording on the coupon.
I have a $XX.xx pre-owned reward certificate, and I want to use it on a B2G1 transaction. Should I?
It depends. If the three games are equal value, do not use your certificate. The value of the certificate would be applied to the free game, which would not benefit you. If one game is more expensive, you can use the certificate to make it the same value as the other two games ($5 reward certificate applied to transaction with two $10 games and one $15 game would make all three games $10).
TERMINOLOGY AND LINGO:
ASL/SL: Assistant Store Leader, Store Leader; manager positions at GS.
B2G1: Buy two, get one free. Typically refers to the coupon you receive when becoming Pro.
GCU/BB: Gamer’s Club Unlocked, Best Buy
JD: Junior detective, an employee who is out to get someone
LP: Loss Prevention; this is the department that actually bans accounts after being flagged.
TC/TiC: Trade credit.
TIV/TV: Trade in value, or what a game currently trades for. When posting a TV for a game, always use the base value.