When you purchase a money order the money order will have a limit to the amount each money order you can purchase.
Money orders have a limit from $700.00 to $1,000.00 depending on where you buy the money order from.
When you buy a money order from USPS they limit the money order purchase to $700.00 and for Walmart and other places they limit there money orders to $1,000.00
So if you need to send money orders for more than $700.00 or $1,000.00 then you need to purchase additional money orders.