Value depends on condition. If it's really in good shape - good tires, good sheet metal, good clutches, good hydraulic force, tight loader, no leaks anywhere, then it could be worth as much as $8k-$9k. Any of these factors can reduce value by $1k or more each if work is needed. Is the loader a Kubota 1720 or something different? The 1720 is heavy and not removable. An after-market loader like the Do-All can be worth a bit extra.
I bought a L345 new and later traded it in on a bigger rig. But I always missed it - the L345 is a handy size. I have another one now.