280mm Prototype Siege Cannon — EVE Online prices
PLEX
4.96M ISK
1d— 0.02% 7d▲ 1.48%
INJECTOR
738.00M ISK
1d▼ 3.39% 7d▼ 3.56%
EXTRACTOR
466.80M ISK
1d— 0.02% 7d— 0.04%
PLEX / Injector
148
EVE Online event · Oct 6 — Nov 3
Crimson Harvest
Event market
Jita · 7 days
Cruor 209.90M▲ 4.8% Ashimmu 230.50M▼ 0.7% Bhaalgorn 921.70M▲ 2.0%
Ends in
23d 18h 10m
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280mm Prototype Siege Cannon

Type ID
9417
Volume
5.0 m³
Group
Projectile Weapon
Category
Module

Where to get 280mm Prototype Siege Cannon

Tech I variants without a blueprint (compact, enduring, scoped and the like) drop from NPCs in missions, anomalies and sites. CCP does not publish drop tables, so this is a hint by item type.

Search “280mm Prototype Siege Cannon” in the EVE University wiki →

Best prices by market

Market Best Buy Orders Best Sell Orders Last trade?The day this item last changed hands in this hub. ESI records a candle only for days with at least one trade, so in a small hub the chart legitimately ends earlier than in Jita — that is thin trading, not missing data. Year position?Where the current sell price sits among the daily average prices of the last year. 0% — the cheapest it has been, 100% — the most expensive. Shown once there are at least 30 days of history.
JITA 234.0K 5 276.9K 24 2026-10-09 50%
AMARR 103.1K 6 380.0K 1 2026-10-09 79%
DODIXIE 114.7K 5 798.0K 5 2026-10-09 82%
RENS 260.4K 5 497.9K 4 2026-10-09 44%

Price chart (last 365 days)

Period: month 3 months year all
Technical analysis  — RSI 14, SMA 7/14/30, MACD, Bollinger Bands, support/resistance levels and volume spikes — overlay them on the chart to spot entries and avoid buying the top.
Available with the ISK Basic subscription. Pays for itself with one good trade.
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Indicators How to read?
RSI 14 — >70 overbought, <30 oversold
MACD 12/26/9 — crossing the signal line up means momentum is building

Trade volume chart

Order book