Update 7/28/20: Giftcards.com has now lowered their max to $250 as well. Simon Mall $1,000 gift cards are the only online high-denom Visa/MC gift card available that comes to mind now. (Hat tip to GC Galore)
Original Post 7/3/20:
Giftcardmall has reduced the maximum value of their Visa gift cards to $250, down from $500. Some speculate this is due to fraud issues, perhaps it’ll back eventually. Giftcards.com is still selling $500 Visa gift cards.
Giftcardmall and giftcards.com also decreased their portal rewards max from $60,000 in purchases to $2,000. Lots of changes on the manufactured spend front.
Hat tip to eric and dabigman9748