Cost reduction effects with Offspring

So I'm pretty sure I've got this right, but I wanted to check with other people to be sure: A cost reduction effect from, for example, Temur Battlecrier doesn't affect Offspring costs, right? So if I cast Tender Wildguide with Offspring while I have Temur Battlecrier and any number of other 4-power creatures on the field, it'll reduce the cost of the Wildguide but I'll still have to pay 2 for Offspring?