From the outside, L3 is very shiny and impressive. A bit like the image VS used to have. If that floats your boat, you are hooked.
Bit like getting your car serviced at the Mercedes main agent. All image. Free coffee and biscuits. Sky TV, comfy sofas. Then they charge you £150 + VAT for 5 litres of oil. Plus labour.
Same job can be done for a lot less elsewhere. Depends on how much image matters to you.