It'll depend on the float but your knife will generally sell for 23/24 rather than 24/25 for a regular one, if you want pure keys, post on reddit 3 times a day and pray to get offers, or post it on lounge and wait for someone to randomly send you an offer worth around 24 keys or more, just be patient :)

http://csgo.steamanalyst.com/id/117334/AK-47-Vulcan-Minimal-Wear

The vulcan MW is worth around 19 Keys right now on market, so you'll be able to get 16 keys really quickly, maybe 17/18 if the float is low.(under 0.10)

At this price range, I experienced trading with vanilla knives (BFK, bayonet, M9) and profit was quite smooth.

About prices, you can still check steamanalyst and pay 85% of the price.

how to get quicksells?

Luck, mostly, people are not really selling below 85% anymore, or that's really rare and not really the most profitable way of trading.

to know the price of an item, check the globaloffensivetrade subreddit and search the name of your knife/item (wich is not on market), sort the result by new and you'll get all the most recent post selling the item you want to price check.

For example you'll see that a karambit doppler Phase 3 got his regular price at ~150 Keys, quicksell price will be under 145~ Keys, but at this price range it's your decision to tell if it's trully a quicksell price or not.

Most knives got a difference in there price due to float/patterns, so it's all about knowledge about "is this knife worth that much?" and if so, what would be the lowest price people pay for it.
To know that, just search around the threads selling the item and see what people generally offer.

But again, that's quicksell isn't the most profitable way to make profit. best thing to do in my opinion is to get items for a quite fair price and then to sell it for a bit more in keys or try to trade it for items while asking for an overpay.

If you have any other question or if you want me to develop a point, ask me.

Actually quickselling knives won't lead to profit haha !

If you're looking for knives that are easy to trade anyway, the vanilla knives (mostly M9/bayo/Kara/butterfly) are really easy to trade and stable in price. You can also try to get a nice bayonte doppler I believe at this price, be sure to not buy a bad floated one.

And on "should you buy 4x60$ or one at 285", Well, the profit with a 285$ knife is basicly bigger (the more you have, the more you get) while with 4x60$ knives, you'll have small profit but 4 times, so it's up to you, you'll get more luck to get offers by having 4 different knives but it'll require quite more work and the profit will come by lower amounts.

Up to 130

I think the tiny purple is quite fucking up the fact that it was "full gold". I think that if you wait a bit you could get 15 K over market, but that's gonna be hard since most people are looking for blue over gold. Friend of mine sold one with mostly gold for market price 2 days ago, you should be able to get that at least.

He'll probably sell the knife by downgrading it into several items and so asking for an overpay, so if he's buying it for 100 K pure, he'll sell it for 110 K of items and make 10 K profit. the profit he's making isn't as good as what a quickbuyer would make but at least he won't have trouble finding knives while quickbuyers are sometimes not having any offers.

You could expect around 10 more keys for that in my opinion, but the knife isn't that clean so this is gonna be quite hard.

~150 Keys.This guy is buying quite same pattern for 165 Keys here: https://redd.it/479fls