David,
Decware and Salk are very small companies. They essentially build to order and do not hold pre-built units in warehouse stock. There is always going to be a backlog in this type of small company. Yes, they may have materials constraints due to the Global pandemic supply chain issues. However, they are also limited by their production capabilities. If you want to pay more, buy from a company that builds products in advance, warehouses them, and sell through a dealer network.
