If you have an AMEX card, you can buy tickets now, but they're not offering any floor tickets, currently:
https://www.axs.com/events/472133/un.../promos/537325
Goldenvoice presale this morning, but I don't know the code. General on-sale on Friday.
GA Floor: $59.50
Reserved Lower Loge: $95
Reserved Upper Loge: $85
Reserved Lower Balcony: $85
GA Upper Balcony: $49.50