How would you value this 2012 Giant TCR Composite 1?

Hi guys, I'm just getting back into biking again. I sold my old 2011 Windsor Fens from bikes direct back in 2018. I've since been interested in biking for health and wanted to get back into the hobby/sport. I have not been in the loop with current bike tech and everything is so expensive for me, so I'm looking at older used bikes.

Would this be a good bike to get back into? What would you value this as? Seller is looking for $550.

Some details from the seller:
– Size: Small — recommended for rider height ~ 5′4″ to 5′7″ (163-170 cm)
– Frame: Giant TCR Composite 1, carbon fiber, compact road geometry, internal cable routing
– Fork: Giant Carbon Aero road fork, aluminum steerer
– Front Derailleur: Shimano Ultegra, braze-on, 3×10
– Rear Derailleur: Shimano Ultegra, 10-speed
– Crankset: Shimano Ultegra triple, 10-speed
– Bottom Bracket: Shimano Hollowtech II
– Cassette: Shimano Ultegra, 10-speed
– Chain: Shimano Ultegra, 10-speed
– Brakes: Shimano Ultegra dual-pivot rim
– Wheels: Mavic Ksyrium SL aluminum clincher wheelset
– Saddle: X-Comfort performance saddle (upgraded)
– Seatpost: Giant carbon, 27.2 mm, integrated clamp
– Pedals: N/A

Thank you!