For a decent make of outdoor socket with RCD protection, you’re looking at around £60, the circuit breaker in the MCB in the consumer unit is another £10, cable, clips, and drilling to the outside to fit, probably a few hours work. I’d say it was probably about the going rate for a qualified spark
Previous Motability Cars
2006 - 2009 Skoda Superb VR6 2.0tdi
2009 - 2012 Citroen C5 2.0tdi VTR Nav
2012 - 2015 Nissan Qashqai 1.5dci tekna
2015 - 2018 Ford Kuga 2.0tdi Titanium X
2018 - 2021 BMW 220d X drive 2 Series Active Luxury
2021 - 2023 Hyundai Kona Electric Premium SE
2023 - Hyundai Kona Electric Ultimate