I’m not going to go through the hatcheries, you can do that, but most will. Different hatcheries are different. The main purpose of minimum orders is so there are enough bodies in the box to generate heat and keep each other warm. It’s usually mentioned somewhere on their website or just pick up the phone and call. They should know what their policies are.
Different hatcheries may still have minimum numbers of breeds or species, some don’t, but these minimums are different for different hatcheries. Some have additional costs if you order small numbers or different breeds or species. All this is so hatchery-specific you can’t generalize. Costs for all this can vary quite a bit hatchery by hatchery.
Another thing to be aware of is packing peanuts. Most hatcheries might add some extra males to the order to provide extra warmth during shipment, say your total number is low or bad weather is forecast. These are practically always extra males they don’t need. If you don’t want packing peanuts this might be worth a phone call.
From what I’ve a seen, it’s hard to just get two poults. Good luck on that one.