Selling A/A+ Some with Skills

Hello I am new to summoner and I have really no idea what some are worth or worth anything at all.

Trying to find some good a/a+ Rancor Winged summons.

Here is what I have for trade.
Purple:A+: Elf Commander ATK 1738 DEF 1380 HP 1491 BP 10 Skill Decrease Enemy Attack 1
Red:A: Cruel Black Wings ATK 1080 DEF 1179 HP 943 BP 12 Skill Decrease Enemy Defence 1
Red:A: Dark Elf Berserker ATK 1094 DEF 1064 HP 1322 BP 11 Skill Preemptive strike 1
Purple:A: Child of Purification ATK 812 DEF 1559 HP 1384 BP 13 Skill Slumbering Breath 1
Purple:A: Slaughter Bee Queen ATK 950 DEF 1580 HP 1094 BP 11 Skill Preemptive strike 1
Red:Pure Dark Embodiment ATK 1630 DEF 1185 HP 1026 BP 11
Purple: Catoblepas ATK 1392 DEF 1914 HP 1593 BP 17
Purple: Scaled Chimera ATK 1735 DEF 1468 HP 1424 BP 16
Purple: Lord Of Sloth ATK 1123 DEF 1839 HP 943 BP 12
Green: Great Horned Warrior ATK 822 DEF 1211 HP 1413 BP 10
Purple:A: Fafnir ATK 1336 DEF 1558 HP 1072 BP 14 Skill Critical Rate Up 1
Green:A: Centaurus ATK 1557 DEF 1511 HP 1410 BP 17
Purple:A: Shock Tarasque ATK 1884 DEF 1591 HP 1055 BP 18 Skill Increase Party Defence 1
Green:A: Flame Eifu ATK 1500 DEF 2265 HP 1524 BP 19
Green:A: Hell Hammer Spider ATK 1368 DEF 1185 HP 1170 BP 11

Now B's with skills
Preemtive Strike 2 < Means I have 2 with that skill
Covert Down
Critical Rate Up
Slumbering breath 2

No one is interested?

buuump

Comin people helllllllooooooooooooooo

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