I talked about cleaning equipment that will help you, but there's nothing like having someone else do it. Buying a busy professional a voucher for a one-time maid service is nothing less than heaven-sent.
To put prices into perspective, I found a price estimator by MoreHands.com, a Texas cleaning company that calculates the price you pay for maid services. Turns out their calculator says the cost for a one-time cleaning service for a one-bedroom apartment starts from $69. If you're interested in hiring a maid, it's helpful to look for companies on Yelp and read feedback from reviewers before deciding on a firm.
Sites like cleaning service Homejoy offer gift cards for services.