The general rule to make platinum in Warframe is to sell items other tenno do not want to farm. Not everybody likes every mission and not everybody has the time or the equipment to run every mission. There will always be demand for items. Here is a list with 20 things worth selling to other tenno. Prices may vary over time. Best check warframe.market for the current pricing.
Prime junk, 6 parts (12p)
Prime junk always sells reasonable especially when Baro Ki’Teer is around. You sell 6 random prime items and get 12p in return. It is not much but it will clean up your invetory and provides an easy way to make platinum. I would highly suggest you make a list with items worth selling before you start this. Best way to find buyers is to put WTS prime junk 6/12p in trade chat.
Ayatan sculptures (5-15p)
The Ayatan sculptures sell most of time filled with Ayatan stars. Most popular is the Ayatan Anasa that usually goes filled for around 15p. The Piv sells for around 10p filled but is much harder to sell. Both can be sold in trade chat or on warframe.market.
Ayatan Amber stars (4p)
The Amber stars sell in large numbers every day because they are the rare version of Ayatan stars and players need them to fill their empty Anasa sculptures. They sell well in bunches of 6 either in trade chat or on warframe.market.
Drift mods (20-35p)
The Orokin Moon puzzles (Halls of Ascension) reward drift mods after completion. Some of them are always worth selling. Most notable Cunning Drift (20p), Power Drift (20p) and Speed Drift (35p). But they sell in very low number. Best use warframe.market to sell them.
Rare mods from Void Treasure Rooms (4-15p)
Void missions always spawn treasure rooms. These have lots of containers that you can easily open. They can for example contain Rage (15p), Continuity (8p), Split Chamber (4p). You can sell them on trade chat as well as warframe.market.
Syndicate mods, archwing parts, syndicate weapons (10-35p)
You cannot be on good terms with all syndicates at all times. And because of that syndicate weapons, augment mods and archwing weapon parts sell reasonably well. Weapons like the Sancti Tigris go for around 35p, Vaykor Hek for 30p, Rakta Cernos for 35p but they all require daily syndicate standing grind. Warframe augment mods like Accumulating Whipclaw or Regenerative Molt go for 10-15p but their demand varies depending on current trends. Finally there are archwing weapon parts. Prices are around 10p. Use warframe.market to sell syndicate items.
Uncommon and rare archwing mods (20-25p)
Archwing mods are always hard to get and therefore in good demand. The older mods like System Reroute or Kinetic Diversion that you can find in archwing missions go for 25-30p. The newer ones like Ion Infusion, Magma Chamber, Charged Bullets or Contamination Casing go for 20-30p.
Invasion weapon sets (30-40p)
Although invasions pop up regularly some weapons seem to be in high demand all the time. Snipetron Vandal and Sheev set go for around 30p. A complete Karak Wraith set is at around 40p. But those are not fast sellers and I advise to sell them on warframe.market.
Corrupted mods (15p)
Corrupted mods come from Orokin vaults in the Derelict and are needed for all late game builds. They used to be very rare but nowadays you can easily farm the vaults solo. Overextended, Narrow Minded and Transient Fortitude still sell fast for 15p on trade chat.
Arbitration reward mods (25p)
Mods from Arbitration rotation rewards or their rewards shop have lost significant plat value but they still give a nice 25p snack from veterans. You want to sell Adaption, Rolling Guard or Power Donation that all give around 25p.
Veiled Rivens (10-70p)
When you do not want to take the chance of unveiling a riven mod and investing time and Kuva in cycling the best possible stats, you can just sell veiled rivens. They go for different prices. Veiled pistol riven mods are on the lower end with 10p and kitgun, zaw, shotgun, archwing riven in the middle 30-45p. Veiled rifle riven mods get up to 70p.
Rare parts or complete sets of lates Prime Access (10-120p)
Everybody wants to have that fancy new warframe and its signature weapons. Uncommon and rare parts of the latest Prime access always sell fast for prices of 10-50p. Complete sets sell for 60-120p depending on how long the Prime Access has been out. Sets sell fast on either warframe.market and trade chat.
Baro Ki’Teer, same day (30-60p)
Every other week Baro brings a random number of prime mods, dual stat mods and weapons that are worth reselling. Same day sales are one the most obvious way to make platinum. Prime mods, electricity dual stat mods and weapons in particular go for 30-60p per item when Baro is around. They are very hot in trade chat.
Lenses, Eidolon Lenses, Eidolon Lens blueprint (5-60p)
Normal lenses drop from bounties on the Plains Of Eidolon. The more popular ones like Zenurik lens make 7-10p and the less popular make barely 5p. But Eidolon lens blueprints sell for solid 20p and fully build Eidolon lenses for 50-60p.
Baro Ki’teer, 2-3 months later(100-200p)
Another more profitable strategy to make platinum off Baro’s items is hoarding them for 2-3 months. Some weapons like the Prisma Twin Gremlins, Prisma Grakata or Vulkar Wraith come only 3 times per year and they sell for up to 200p. Popular prime mods like Primed Continuity, Primed Flow, Primed Pressure Point, Primed Pistol Gambit or Primed Traget Cracker will go above 100p after a short while. From the dual stat mods electricity is always worth the wait until it hits 100-120p sale price. Here you should use warframe.market because you might forget about the mods in your inventory.
R10 primed mods (250-400p)
Another way to make platinum from primed mods is selling maxed out R10 variants. The buyer still has to pay 1 million credits trade tax but saves 1,976,436 credits and 40,920 endo he would have to spend from his resources. Good candidates are Primed Flow, Primed Continuity, Primed Point Blank, Primed Pressure Point, Primed Target Cracker, Primed Pistol Gambit. Here again warframe.market is the better place for selling because they sell slow.
Vaulted prime sets (200-250p)
If you like to hoard stuff to sell it later you want to invest in vaulted prime sets. Whenever something gets vaulted either get the parts cheap or farm everything from it. Then just let it sit for at least 3 months. Sometimes it takes even 6 months but eventually sets will reach 200-250p. If you want to take a long break from the game or you enjoy the waiting game this is a solid choice.
ESO Lato and Braton Vandal (50-250p)
Elite Sanctuary Onslaught (ESO) brought the Lato Vandal and Braton Vandal back into the game. Complete sets sell for around 200-250p for both Vandals. Some of their parts like the Braton Vandal stock or the Lato Vandal barrel also sell for 60-70p.
Warframe Arcanes (25-1500p)
Hunting Eidolons or “tridolons” can be a good platinum source. One Arcane Grace or one Arcane Energize still values at 140-160p. Complete rank 3 (10 arcanes) sell for 1500p. But most of the other arcanes hardly sell. Notable exception is Arcane Guardian that gives a decent 20-25p per arcane.
All other arcanes for zaws, kitguns, amps and operators are either way below 10p per arcane or have zero demand. Only rank 3 (10 arcanes) Magus Nourish and rank 3 Magus Lockdown are selling for 50-80p.
Unveiled Rivens (20-2000p)
Selling unveiled rivens is playing with the slot machine. Trash unrolled rivens for obscure weapons give barely 20p. Popular unrolled trash rivens can give 60-100p. If you have a great roll, prices of 250-2500p are possible. Selling is very time consuming in trade chat. Warframe.market has an auction section for rivens that works well but also requires some manual work. – Check my video on selling rivens on warframe.market.
Youtube – 20 ways to make Platinum