Get alerts when the price of the thing I want to buy reaches X amount automatically and remotely?

[Dasium]

I'm thinking about this for a long time:

How can I get alerts when the price of the thing I want to buy reaches X amount, without having to run programs on my computer and with the free / cheap option of running the script online?

if you don't know how can be executed remotely, how can I run it on my computer automatically 2 times a day, without having to worry and forget about it?

thanks for suggestions

[Fire_track]

@Dasium rdp cost very low, depend on server, use it with 1 thread