How much more does a Ruby, Sapphire or Black Pearl Doppler cost?

Black Pearl is the most expensive Doppler phase. It was priced above the Ruby on 15 of the 17 knives where we could price both, and only the Flip Knife and the Nomad Knife went the other way.

The four numbered phases sit close together. Phase 2 is the only one with a clear premium, and Phase 3 typically costs about the same as Phase 1.

The cheapest Factory New listing for each phase of all 18 Doppler knives on October 15, 2026, with the multiple over Phase 1 underneath. The cheapest numbered phase of each knife is highlighted. Open a knife for its live price on every market.

The same phase is worth very different multiples on different knives. A Ruby Karambit costs 6.01 times a Phase 1 Karambit, while a Ruby Falchion costs 2.22 times a Phase 1 Falchion.

So use the typical multiple as a first guess and check the knife itself before you pay. A Black Pearl M9 Bayonet at 8.28 times its Phase 1 is $6,641.01 against $802, a gap no rule of thumb would predict.

If you want a Doppler and do not mind which numbered phase, buy a Phase 3. It was the cheapest numbered phase on 14 of the 18 knives, typically about 1% below Phase 1. On the Bowie Knife the gap was 10%: $206.02 against $229.43.

Phase 2 goes the other way. It typically costs 17% more than Phase 1, and on the Butterfly Knife it costs 84% more, $3,655.53 against $1,989.57. Phase 4 sits in between at a typical 5% premium.

Gamma Doppler has its own four phases plus Emerald. A typical Emerald costs 2.96 times a Phase 1 of the same knife, from 2.02 times on the Shadow Daggers to 5.86 times on the M9 Bayonet.

Here Phase 4 is the cheap one, the lowest numbered phase on 7 of 10 knives. Phase 2 again carries a premium, typically 14%.

The Glock-18 Gamma Doppler is the one gun with phases. Its four numbered phases were all priced within 29 cents of $78.80, and the Emerald cost $313.76, 3.98 times as much.

On all 18 knives, the Minimal Wear Phase 1 was priced above the Factory New Phase 1, typically by 28.7%. The same held for Phase 3 (+31.3%) and, on 16 of 18 knives, for Sapphire (+28.9%).

Scarcity is the likely reason. On October 15 we counted 46,257 Factory New Doppler knife listings across the markets we checked and 3,854 Minimal Wear, about 12 to 1. Fewer listings also make a less reliable price, so treat Minimal Wear figures as rougher than the rest.

Six markets we track list a Doppler under one name for every phase: Steam, Skinport, DMarket, SkinBaron, HaloSkins and Market.CSGO. There you find the phase from the listing image or by inspecting the knife, and you cannot compare phase prices at a glance.

On Steam it also costs more. Across the 16 knives with a Steam listing, the cheapest Doppler there was typically 39.8% above the cheapest numbered phase on the markets that split phases. The smallest gap was 28.9%, the largest 60.4%.

Every knife page on Skinstrack shows the price of each phase on every market, so you can see what a phase costs before you go looking for one.