Need Weapon Valuation Advice

Hey everyone
First time posting here (at least I think it is, I thought I already had an account a couple of years ago but I don't have access to the email any more) and I have to admit, I'm a bit embarrassed to be making this post.

I've been a GW player on and off now for 6 years this month and I have no idea how to value weapons. To be honest I've never really been that bothered about it, I'm not a bit fan of trading, I get bored too easily so the vast majority of weapons that I pick up I just sell to the merchant.

I used to have this naive view that green weapons where worth the most, fact of the matter is most of them aren't hardly worth anything and in fact a lot of blue or gold weapons are actually worth the most. Problem is I have no idea what separates a 2K weapon from a 200K weapon, or even more.

Getting my next few Hall of Monument points is going to rely solely on money, so knowing if what I pick up every day is worth something or not would help greatly.

I've read through the basic price check guide and learned a lot but to be honest I don't understand all the jargon.

e.g.
I have NO idea what this means :/ . . .
-q8 15^50

Also cant find anything on bows/scythes/daggers. Does that mean they are worthless?

If anyone could just give me a couple of tips I would really appreciate it.

I've listed a few random pieces below, if anyone could tell me what its worth and how they come to that conclusion, and also what the market jargon would translate to I would really appreciate it. I know some are worth nothing, but I don't know how much the "ok" ones are worth.

Ice Bramble Shortbow of Fortitude (Gold)
Cold Dmg: 15-28 (12 Marksmanship) (Gold)
Health +29 (Gold)
Inscription: "Brawn over Brains" (Gold)
Damage +15% (Gold)
Energy -5 (Gold)

Defensive Hold Branch of Deathbane (Gold)
Halves skill recharge of spells (chance 20%) (White)
Energy +10 (white)
Fire Dmg: 11-22 (10 Divine Favor) (White)
Armour +5 (Gold)
Inscription "Vengeance is Mine" (Gold)
Damage +19% (Gold)
Dmg +20% (vs. undead) (Gold)

Aureate Longbow of Fortitude (Blue)
Piercing Dmg 13-23 (8 Marksmanship) (White)
Health +23 (Blue)

Swift Jeweled Staff of Inspiration Magic (Blue)
Halves skill recharge of spells (17%) (White)
Energy +10 (White)
Chaos Dmg: 10-20 (11 Illusion magic) (White)
Halves casting time of spells (7%) (Blue)
Inspiration Magic +1 (12%) (Blue)

Ruby Daggers of Enchanting (Purple)
Piercing Dmg: 7-17 (10 Dagger Mastery) (White)
Enchantments last 15% longer (Purple)
Inscription "Guided by Fate" (Purple)
Damage +13% (while enchanted) (Purple)

Sundering Gemstone Axe (Gold)
Slashing Dmg: 6-28 (10 Axe Mastery) (White)
Armour Penetration +20% (chance 20%) (Gold)
Inscription "Dont Fear the Reaper" (Gold)
Damage +19% (while Hexed) (Gold)

Silencing Azure Shortbow of Marksmanship (Gold)
Piercing Dmg: 15-28 (9 Marksmanship) (White)
Lengthens Dazed duration on foes by 33% (Gold)
Marksmanship +1 (19%) (Gold)
Inscription "Too Much Information" (Gold)
Damage +14% (vs. hexed foes) (Gold)

Banor's Sacred Branch (Green)
Energy +10 (White)
Hold Dmg 11-22 (9 Protection Prayers) (White)
Halves skill recharge of spells (20%) (Green)
Energy +5 (whilst health above 50%) (Green)
Health +60 (Green)


Thanks