For Starters, the Cost of the recently launched James Webb Space Telescope by NASA is 10 Billion USD.

Key Points about the Launch by NASA:
The world’s largest and most powerful space telescope has rocketed away on a high-stakes quest to behold light from the first stars and galaxies and scour the universe for hints of life.
NASA’s James Webb Space Telescope soared from French Guiana on South America’s north-eastern coast, riding a European Ariane rocket into the Christmas morning sky.
The $10 billion observatories hurtled toward its destination 1.6 million kilometres away, more than four times the distance to the Moon.
It will take a month to get there and another five months before its infrared eyes are ready to start scanning the cosmos.

Mission DIrections
One day after liftoff, Webb will turn its high-gain receiving wire toward Earth to additionally work with operators with its overseers.
A day from that point onward, the shuttle will play out another motor consumption to refine its direction toward L2.
Three days after liftoff, the bed holding Webb’s colossal sun shield – – a five-layer structure intended to keep the infrared telescope and its instruments cool – – will be brought down, the report said.

At around 10 days after takeoff, Webb will broaden its 0.74 meters optional mirror, which is so named in light of the fact that it’s the second surface that deep space photons will hit en route to the telescope’s instruments.
Twelve to 13 days afterward launch, Webb’s 6.5-meter essential mirror – – made out of 18 hexagonal sections, will sparkle. The mirror’s two sides “wings” will expand and secure the setup, giving the surface its stability.
By then, Webb will be in its last engagement.
The gigantic observatory will show up at its objective somewhat about fourteen days after the launch, directing another motor, 29 days after launch to slip into space around L2, where an alternate configuration of increase methods will start, the report said.
Hubble vs Webb
Check this detailed chart for a profound comparison between these two magnificent Telescope, Hubble & James Webb Telescope:

The observatory was lifted skyward by an Ariane rocket from the Kourou spaceport in French Guiana.
Its flight to orbit lasted just under half an hour, with a signal confirming a successful outcome picked up by a ground antenna at Malindi in Kenya.
Webb, named after one of the architects of the Apollo Moon landings, is the successor to the Hubble telescope.
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