You need to understand that many difficulties are temporary - the marketplaces themselves are interested in the comfort of customers and will definitely fix technical problems in the near future.
Naturally, people will get poorer, because wages have not increased, and the exchange rate and prices for goods have already skyrocketed or will skyrocket in the near future. But customers won't stop buying.
Large brands have suspended work, which means that other large and small sellers will certainly fill their share in the niche in order to meet demand.
At the same time, there is a shortage of goods even on marketplaces. In analytics services, balances are easily tracked. This may be due to an increase in prices from suppliers, as a result of which sellers may reduce the volume of purchases and be afraid to purchase at inflated prices. Maybe someone is waiting and watching how the market behaves.
I'm not a big believer in price kickbacks from suppliers, so if you have a product that you're confident about, with high margins and good sales volumes, buy it now.