what to do if gear is lost by "friend"?

y'all act as the jury.

I bought Freewell and v1 bundle for $399 - $440 after tax.

He borrowed it and lost the 6-9 stop which is one of the key parts.

He's lowballing me and offering $100. I can't replace/buy due to it being discontinued.

I asked $200. Friend had offered to buy a v-mount battery and I declined and requested $200.

After a whole day he still thinks $100 is fair.

If you lost your friends discontinued tech/gear/anything and you he asked for half value would you pay or offer lower?

I will attach screenshots and let me know if I'm in the wrong for asking for only $200 rather than $400.