If you apply your warped logic to the Singaporean worker, then the employer has to pay for rental, office furniture CPF contribution, utilities and water and toilet facilities health insurance, etc.; then the Singaporean is grossly overpaid.
Would a Singaporean worker be willing to work from 5:30 am to 10 pm 7 days a week and given 1 day off a month?
Careful about what you call warp logic. Provision of food, lodging and medical cover to a foreign worker are known as intangible benefits that actually carry a $value. Expat workers have accommodation supplements, travel susbsidies medical cover as part of their pay negotiations.
Any accountant will tell you that an employment contract specification of pay includes the intangible benefits of (Food, lodging, transport allowances, medical/dental benefits, medical leave etc)
If your office provides FOC meals or meal coupons to get food at your staff canteen without cash payments, that is considered as one of the intangible benefits of your pay too.
Therefore the
total employment package for a foreign maid in terms of $ spent should include in addition to her monthly salary her medical/dental cover, food, lodging, levy, maid agency fees, ticket home and even clothes bought and given by her employer. Add all of the above up for the period of employment is what it will cost you to have a maid working for you for say 3 years.