In 'Welcome to My Home,' you can place a large number of farm items based on your character's level.

When purchasing farm items through Shop, you can buy and place them all at once up to the maximum available quantity.

When purchasing production items from Shop, you can set the quantity to purchase at the bottom of the purchase screen. Once you set the quantity, consecutive purchase is possible.

However, please remember that consecutive purhcase is only possible when purchasing and placing production facilities directly from the shop, and not from your inventory!