It's a nice business name for the UK valet market. My opinion is if somebody wants it they'll certainly go more. They'll going to be charging around £50 for a full mobile valet. So hopefully you can see just how low even £200 is. This sort of name works perfect and providing it is an end-business enquiry they've set their mind on it.
I'd be tempted to require at least £300 to £400, and holding firm. seeing you listed it as 'Make offer' your tempting the chancers. If I had it listed it would be at least £600 fixed.
Don't let it go for the first offer or so low.
Don't forget these low offers can come from domainers looking to sell on at a good profit.
Money where my domainer mouth is - I'd give you a £100 for it any day of the week. The .com has been in business since 2018 in the UK