E18-11 (LO2,3) (Allocate Transaction Price) Refer to the revenue arrangement in E18-10. Repeat the requirements, assuming (a) Geraths estimates the standalone selling price of the installation based on an estimated cost of $400 plus a margin of 20% on cost, and (b) given uncertainty of finding skilled labor, Geraths is unable to develop a reliable estimate for the standalone selling price of the installation. (Round amounts to nearest dollar.)

E18-10 (LO2,3) (Allocate Transaction Price) Geraths Windows manufactures and sells custom storm windows for three-season porches. Geraths also provides installation service for the windows. The installation process does not involve changes in the windows, so this service can be performed by other vendors. Geraths enters into the following contract on July 1, 2017, with a local homeowner. The customer purchases windows for a price of $2,400 and chooses Geraths to do the installation. Geraths charges the same price for the windows irrespective of whether it does the installation or not. The installation service is estimated to have a standalone selling price of $600. The customer pays Geraths $2,000 (which equals the standalone selling price of the windows, which have a cost of $1,100) upon delivery and the remaining balance upon installation of the windows. The windows are delivered on September 1, 2017, Geraths completes installation on October 15, 2017, and the customer pays the balance due. Prepare the journal entries for Geraths in 2017. (Round amounts to nearest dollar.)