Is This Boiler Finished And Needs Replacing - Valliant

2010 model in mt flat - Has been leaking for some time - I dont know whether to spend a few hundred on fixing or whether to spend a few thousand (which I dont have) On replacing

The position of the flue and the fact its all boxed in means I will need to spend more after to redecorate so I would love to fix but the boiler man pushing me to replace

https://preview.redd.it/scfcnp6t6hbh1.png?width=1200&format=png&auto=webp&s=c890de7ebb7da3caac25b3a3dbe1fa456f74007a

https://preview.redd.it/oa3dez2v6hbh1.png?width=1200&format=png&auto=webp&s=1e6897c0bae9bea1df8f3e986eec8bde70729cc3

https://preview.redd.it/rdsteogw6hbh1.png?width=1200&format=png&auto=webp&s=597315804b62861da12e64f7beb9913432916c16