This seat is brand new. I paid 69euros on Amazon, selling for 45euros

It's seatbelt fitted (not ISO fix). Available to collect from Santa Isabel/ Estrela area in Lisbon.

For full details, search:

Kinderkraft COMFORT UP I-SIZE 76-150 cm, Baby car seat, Children's car seat, Chair, Belt, 11 levels, Group 1/2/3, 15 months - 12 years, 9 - 36 kg, Black