Iowa R. Civ. P. 1.273. — Costs

1.273(1) Only the representative parties and those members of the class who have appeared individually are liable for costs assessed against a plaintiff class.

1.273(2) The court shall apportion the liability for costs assessed against a defendant class.

1.273(3) Expenses of notice advanced under rule 1.266 are taxable as costs in favor of the prevailing party.