I was going to ask about that. Should King's Cross (or Kings Cross) have one or not?
According to Wikipedia:
The station name, King's Cross, is seen spelt both with and without an apostrophe:
King's Cross is the signage used in the Network Rail and London Underground stations and on the tube map.
The official Network Rail webpage uses the "King's Cross" spelling.[23]
Kings Cross is used in the National Rail timetable database, as well as on other National Rail railway pages, and the usage is also seen on the TheTrainLine online booking system. However, other stations such as King's Lynn and Hall i' th' Wood also lack apostrophes, suggesting that this is either a software limitation or a consistent stylistic convention.
Older British Railways signage also used the name "Kings Cross", without the apostrophe
Unlike the station, the name of the locality it lies within is commonly written as "Kings Cross", without an apostrophe
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I saw a poster today which stated "£10.000" on it, the main issue was it was all caps though
In continental Europe, decimal points are used instead of commas, and vice versa. So 10,000.55 would be written 10.000,55