If I had to guess, Min 18k Max 25K (max is if in RNG events). Either way you should be fine with the amount you have.

Judging it based on how priced are in China since that is the only source you can base it on. You could also make the argument for edo tobirama since a few teams can utilize him to his full potential. Although the difference between the two ninjas is that kakashi is mainly support while edo tobi is mainly secondary damage. It could be minimum 15k but I don't think it will be priced low enough to your suggested price that other ninjas are priced at (shisui, minato, masked, etc.) Also, you should know by now that a ninjas' kit is not always is a primary factor in price. I mean why is hokage tsunade still over 25K? Last time 1st and 2nd hokages were present in treasure of the sages (about 1.5 year ago), they were priced similar and they were way out of meta. You also have the animation which can play a factor.

Technically, he does through his bond skill. However, for the discussions, bond skills hasn't affected the prices so it doesn't really matter to bring it up. I mean Oasis could have easily raised the price of jonin minato but they didn't.

I am aware of that but the hype behind jonin could have allow Oasis to raise its price but it hasn't. Bond should be a factor in price of the ninja but it hasn't. The prices of upgrading the bond skill is independent from the price of the ninja. It's up to the player to choose to upgrade the bond skill or not.

Of course backlash would happen but stating that high demand can lead to a higher price and Oasis found another way through bells. The hype of his bond skill hasn't died in the lower leveled players. You can tell which players heavily rely on him as the other two ninjas don't work that great with him.