If you ever damage your Dr Martens you can get replacements for the damaged parts for a cost.
Leather soles and heels, albeit very strong, can also be damaged with continued use. However, replacing them is pretty quick. Most cobblers can offer this service usually within 48 hours, depending on how busy they are.
Stick-on soles are there to provide anti-slip properties for the shoes and also to remedy small tears on soles before the damage gets worse. If you haven’t been to a shoe repair shop before, consider choosing an independant one as they may charge less. Bigger repair companies tend to be more expensive as they have bigger overheads. Nevertheless, there’s no harm in doing research and comparing prices before you decide on a shop.
The larger the heel replacement, the more costly it will be. The quality of material is another price factor.
Leather soles and heels can be replaced when they wear out and you can choose whether you want your replacement stitched or unstitched. There are different qualities of leather available. A high grade leather will be more expensive, but will last longer.
Because of their composition, stilettos are more prone to breakage compared to other shoes. When that happens, you can go to a shoe repair shop and have them reattach your stiletto heel blocks. This usually involves adding screws and perhaps some glue to help the repair.