Oathplate chest

A chestplate forged from infernal metal.

MembersBuy limit noneBody

Insta-buyHighest recent buy

82,147,770gp

Insta-sellLowest recent sell

80,888,888gp

SpreadBefore tax

1,258,882gp

1.56%

MarginAfter 2% GE tax

-384,073gp

-0.47% ROI

VolumeTraded in 30D

—

TrendMid price, 30D

—

Price history

1 points · hover for detail

Insta-buy (high)Insta-sell (low)Spread

30D low: 80,888,888
30D high: 82,147,770
Volatility: 1.5%

Flip calculator

Includes the 2% Grand Exchange tax

Buy at

Sell at

Quantity

units

Net profitLoss

-384,073gp

-384,073 per item · -0.47% ROI

Tax puts break-even at 82,539,681 gp.

Capital required: 80,888,888 gp
Gross revenue: 82,147,770 gp
GE tax (2%, 1,642,955/item): − 1,642,955 gp
Break-even sell: 82,539,681 gp

Item data

High alchemy: 360,000 gp99.6% below market
Low alchemy: 240,000 gp
Shop value: 600,000 gp
Weight: 9.979 kg
Skill / type: Smithing
Stack / note: Not stackable · not noteable
Released: May 14, 2025

About Oathplate chest

The Oathplate chest is a members-only item in Old School RuneScape.

"A chestplate forged from infernal metal"

Over the last 30 days it traded between 77,543,743 and 84,201,643 gp on the Grand Exchange, averaging 80,881,168 gp. About 352 units changed hands per day. The price is down 2.1% across that window. Selling one at the average price costs 1,617,623 gp in Grand Exchange tax.

Casting High Level Alchemy returns 360,000 gp, which is 99.6% below the 30-day average price, so alching a bought one loses money.

How to get Oathplate chest

Only Yama (Always) and Forgotten lockbox (1/403) drop Oathplate chest.

Dropped by

Monster	Rarity	Quantity
Yama	Always	1
Forgotten lockbox	1/403	1

Oathplate chest price history

Daily averages rolled up per month, newest first.

Monthly average, low and high price of Oathplate chest on the Grand Exchange
Month	Average	Low	High	Volume
October 202612d	79,886,501	77,543,743	82,174,798	4,650
September 2026	82,912,936	79,229,809	88,030,805	9,613
August 2026	86,910,397	83,054,820	89,792,861	15,880
July 2026	89,644,518	87,888,209	92,316,540	21,201
June 202621d	91,065,016	88,034,054	97,263,760	11,572
May 20262d	90,631,875	89,037,394	92,226,355	617
April 20261d	90,411,359	90,411,359	90,411,359	257
March 2026	99,912,057	90,519,212	106,583,445	21,100
February 2026	99,833,376	97,027,644	106,039,507	16,770
January 2026	99,062,340	94,411,673	103,116,715	17,856

Across 10 months of recorded prices Oathplate chest ranged from 77,543,743 gp in October 2026 to 106,583,445 gp in March 2026, measured over 218 trading days.

The 30-day average of 80,881,168 gp sits in the lower third of that range.

All prices in gp. Volume counts units traded across both sides of the Grand Exchange.