The Sony 135mm f/1.8 GM launched for 1,898.00, but has recently seen a price increase to 2,098.00 at B&H Photo / Amazon / Adorama, but there are still some Amazon retailers selling them for around the original price. This is probably the result of Sony expecting the escalation of a trade war between China and America, which could lead to a lot more price increases in the near future.
B&H Photo and Adorama have savings on Sony equipment.
Sony a9 (Save $500):
B&H Photo / Amazon / Adorama
Sony a7RIII (Save $500):
B&H Photo / Amazon / Adorama