I believe this is an all time low for this lens. You may be able to get Sony to price match, although maybe not since it's on back order.
A premium lens to be sure, but positive reviews. Alternatives to consider are Tamron / Samyang's 35-150mm f2-2.8, or canon's 28-70mm offering if you're not locked into a system. A prime (or two) may also be a better choice.
![[Backorder] Sony 28-70mm F2.0 GM $3740.11 + $35.63 Fee + $9.90 Delivery @ Georges Cameras](https://files.ozbargain.com.au/n/90/896290.jpg?h=135fa8c3)

If you need F2.0 at 70mm otherwise the Tamron has twice the reach at almost 50% less. TBH 28 vs 35mm isn’t much different for most people. You won’t be winning any landscape competitions for wide angles, but it’s enough for scenes and groups