How Much Should I Sell TMQ3 Majin Boot's

First it depends on the rank of the boots. Superior, Excellent, Rare, Legendary. Then it depends if the stats are any good. If you want a good estimate right click the item while in AH and compare it to other majin boots. This will help you determine whether or not the item is worth anything.

Give them to Konoha he will sell them and make much need money

I'll give you a Zeni, 2 paper clips and a half-eaten bag of Buffalo Ranch Doritos.