Depends on the supplier. Everything is tighter post-pandemic. It seems to me, sales people are very comfortable using the 'limited supply, order lots now' tactic even if supply is full.
Prices are higher.
MOQ from saver is a pallet or two, but they're absolutely awful to deal with. And there's no more on-the-spot buying. You have to order 6-8 months in advance and hope they can get their act together and deliver.
Burch has been fair with me. MOQ is super low but I order big to lower shipping cost per unit.
For custom- it seems like a $10k fee for set up and 50,000 units annually guaranteed, or somewhere around there.