There are many home care options, and knowing the differences between the different types of services and service providers can aid you in making the right decision.
The post the fare schedule for each city on their website. e.g. here is Lyft Boston $2.25 + $1.50 per mile and $.30 per minute. It's hard to say what a typical ride is. In my experience Lyft is always cheaper than a Boston cab. UberX is sometimes cheaper as long as surge pricing is not turned on.
Not sure how much your ride with Lyft will cost? Most people already know how much a cab will cost (too much), but not everyone can ballpark the cost of a Lyft. Recently Lyft published a fare estimator on the city page of each Lyft market so you can calculate a price estimate before you request a ride.