The OP already knows the rifle is a clone with what he assumes are original parts.
Some of these clones can be done very well.
The information he leaves out, which we can't comment on are the type of mounts, scope, etc.
Around 1970, I purchased a crate of K98 Mausers with the side mount on the rear sight base, for one of those ZF41 type scopes. The rifles were late war, 1943 production, that had been issued and somewhere along the line stripped of their scopes, before going into the crate.
I bought them from International Firearms out of Montreal. The gave me a deal that day, because I purchased 50 Mauser 98K rifles, all matching #, VG-EXC condition overall, $17 each, delivered. Getting up $850 at that time was a stretch for me. I was making $2.25/hour, which was better than average for non skilled labor at the time.
One of those rifles today would easily bring close to $2k.
IMHO, a clone would likely bubba what might have been a decent, collectible firearm, worth a lot less than that not easily come by M1 Garand.
Hopefully he's not looking at this deal as trading up.
On the other hand, he doesn't describe the condition of his Garand either. It may be a fair trade, when all things are considered.