Hi everyone, it's my first time posting here but I've been a lurker all these while.

Photo grabbed from internet for reference. The one offered to me is with a SS/YG bracelet.
In 2015, someone pawned me an Omega Speedmaster Day-Date chrono, 18k two tone. I wore it for a year and eventually had to return it when the debt was paid back to me.
However, the owner is deciding to let go of it just a few days ago and asked me to name a price. I'm not experienced with Omegas and have no idea about the prices, so I'm hoping if anyone here can give me a ball park figure if possible.
Here are some of the information of the watch
Omega Speedmaster
White dial
Day Date movement with Month indicator
SS/YG 18k two tone
SS/ YG bracelet (photo below is with leather)
Condition wise, I rate it 6/10 as the case and bracelet is full of scratches and small dents. During my time of wearing I had also spent 1.2k for a service as it stopped moving then.
The sellee is asking MYR 15K for it btw. Is that an okay price?
Hoping to hear from you all soon, thanks again!
Forgot to mention that it does not come with box and papers though.