Buying vs Servicing

For those of you who do not know how to do small mechanical tasks, do you choose to service your Vostok or buy a new one?

I just paid $150 for a 2024 model.

How long will it be until I need to service my watch again?

The seller I purchased from is apparently an "Official Vostok Dealer". My exact watch is below.

Link to Vostok I bought