amazon web services - How it will be charged if I dynamically launch and shutdown instances -

i want programmatically launch , shutdown instances via api.

i know little aws , how kind of action charged ?

if 1 instance costs 10 dollar 1 hour.

and launch , shutdown , forth 10 times in 1 hour.

how charged ?

from stop , start instance

each time start stopped instance charge full instance hour, if make transition multiple times within single hour.

so in example, you'll charged $10 * 10 = $100

the correct terminology start , stop same instance. when launch, create new instance, still charge remains $100.