We used Super Shuttle and it was around 13 per person.
Not its own service but they can arrange something for you (not free).
Lyft is quick and cheap in the Phoenix area
No but there are several abandoned taxis that cruise Phoenix Airport you might be lucky enough to catch one of those... Uber is the least expensive...
NAFAIK
No, they will arrange for charge. Compared to Uber / Lyft it is costly...
We took uber cheap
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