Yeah, haven't been checked for $500 GC purchase the past few days. Kicks in at $1k as others are reporting.
Even though it's already a known thing, I was able to purchase another GC ($50 in this case. I bought a small value card to test its use at another store.) after hitting the $2k limit with the same card that I had used to hit the $2k limit. Did this at a different store, not that that matters.
As I said, this is already a known thing, just reiterating it.