How much is a "considerable" amount to a seed company

hello, Ive been trying to order a weird strain that not many places have, And this company from Spain says that They are out of stock but if i want a "considerable" amount they will make an order from the manufacturer.
Im guessing its not a definite amount that they will order for so i dont really want to ask, ide rather make an offer of how many i would buy.
How much do you think this seed company will want me to buy, thanks.

Just ask what the minimum order they will accept. If they are not willing to tell you then it sounds a bit iffy.