I’m about to take delivery of a used L460 without a tow bar, not rushing to pay £3k+ to a main stealer for a deployable one and that’s all they will fit.

Has anyone either fitted a deployable or detachable one themselves or had it one fitted and can share your experience and costs please? Current fleet:
2020 McLaren 600LT Spider
2020 Mercedes C300 Cabriolet
2023 PHEV 440 SE
1992 Lotus Esprit turbo
2019 Alpine A110