Hey there, the following are my best guesses. Its very possible that I'm wrong on some of these.
1. r8 AND 15^50 is a nice combo. The skin isnt the most desired but its a decent one. I would guess you're looking at 20-30e for this
2. Jade wands arent exactly top tier, and being r10 hurts again. The big killer though is the 9% mod. Coupled with the 5^50 mod, I think its safe to merch
3. the req is somewhat high at 11, and the skin isnt a super desirable one, however two perfect mods makes this worth keeping. I wouldnt be surprised to see this one go in the 100k-20e range.
4. Same as #2, I would merch this
5. While 20/10 isnt a bad combo, the skin kills this. I would personally either merch this or put it on a hero, but you might be able to get 5-10k for it. I do think it wont be an easy sell though
6. r9 and +5e is nice, although caster weapons are generally preferred to be swords. Still it is 1 handed, and is a skin that I personally dont see super often. Would hazard a 20-30k range guess for this; and while it could go lower, I dont see it going higher
7. I've seen a few of these for sale recently, albeit in other attributes. Based on that I think this could fetch anywhere from 20-50k depending on your buyer
8. Similar story to #7 although I think this one will be much easier to get the higher end of the price range because shields are generally easier to sell than focii I've found
9. Normally I would say merch because it doesnt have an inherent on it. HOWEVER, the r8 means that someone would definitely buy it, although for probably only a few plat. I think your best bet is to head over to the "Buy" forum and look for fallenangel's thread. He is buying weapons that DONT have an inherent, and this could be just what he is looking for.
10. again 20/10 isnt necessarily bad, but its in a less desired attribute AND its r10 instead of r9. The skin saves it a bit and I think you could get around 10k for this, although it may be a hard sale
EDIT: ninja'ed by jimbo. seems we disagree about the wooden buckler a bit