Lay new stone?

[Cogcog]

My courtyard was put in by the builders; dot and dab spots with tumbled indian stone. 15 years on I have wobbly bits, cracked bits and almost no pointing (was repointed with the sweep-in stuff but it didnt last). I have strung it out so far by sweeping kiln and sharp sand into the joints for a 'med beach cafe' feel. But I am wondering now if I should suck it up and get the lot relaid with a proper base, decent stone and 2-pack pointing.

I think there is 200 sq meters, and based on having the patio done in the garden to a good standard in 2021 I think it is a £20k investment to do the courtyard.

Question: will I get my money back when I sell (in about 5 years? House is 4/5 bed worth about £1m.