Those frames are pretty good but it’s not a Merida 96 so lacks a bit of bling.
When I was selling a very good condition Black Platinum 90-120 (but with TPC Lockout) I got somewhere around £100 on eBay but that was 3 years ago. I would probably guess the fork would be worth around that or less. You can get a Reba for not much more nowadays so prices did drop a bit.
As for the frame I think I saw a similar one on eBay going for around £150 not so long ago. My friend paid £120 for his but with lots of paint chips etc. So around £150 for the frame would be my guess.
If selling I would leave the headset and seatclamp, maybe even a seatpost if it’s nothing special. From a buyer perspective it would mean less faff when buying it as I would not have to look for parts that would fit that frame (it probably has integrated headset and 31.6 or 30.9 seatpost) and start building the bike up.
Agree with poster above about 3 lots:
Frame + headset
Fork
Cranks
Good time to sell so you might actually get a higher price but that would have to be on eBay. Gumtree is always worth a try as well.