Should I sell items or put them in the museum in Dig & Clean?

Use available museum space for your strongest finds and sell surplus for immediate cash. The August 8 footage showed per-second display cards whose rates were close to formula-derived sale values, while the August 19 recording showed lump-sum tourist payments instead of per-second ticks. The footage reviewed through August 20 does not establish whether the Update 1 plot rework changed the mechanic or whether both displays coexist; see the museum guide for the dated evidence.

What determines an item's value in Dig & Clean?

Rarity was the strongest predictor in the cards we could reconcile. The footage-based rule is value roughly equal to 45 times the rarity odds raised to the power 0.7. The new August 19–20 accepted rows all fall within ±5% of that rule, as did the earlier checks.

How many items are there in Dig & Clean?

The August 8 collection UI showed a total of 55 items. That dated footage caught a player at 31 of 55 and later 35 of 55, so the counter tracked distinct item types discovered in that recording.

What are the item conditions in Dig & Clean?

Conditions seen on cleaned items were OK, Good, Great, Perfect and MINT. Condition, weight, rarity odds and value appear together on cards. The accepted footage reads show the same rarity-value rule continuing across those condition labels.

Dig & Clean Item Values: Rarity Formula and Sell-or-Display Evidence

Across the item cards we could reconcile, rarity odds are the strongest predictor of displayed value.

Every cleaned item card shows a name, weight, condition and rarity as 1 in N. We compared the readable odds and displayed values rather than assuming which other card fields drive the price.

The original observed data

Item	Rarity	Condition	Value
Duck	1 in 30	OK	486
Dino Skull	1 in 2,937,020	Perfect	1.5M
Old Tank	1 in 9,574,469	Perfect	3.4M
Frozen Mammoth	1 in 17,579,022	Great	5.2M

The rarest item in this dated four-card set is about half a million times rarer than the Duck, but its displayed value is about 10,700 times higher. Value rises more slowly than the rarity-odds number.

The relationship

Fitting the original points gives:

value ≈ 45 × (rarity odds)^0.7

Item	Actual value	Formula predicts	Error
Duck	486	482	−0.9%
Dino Skull	1,500,000	1,488,011	−0.8%
Old Tank	3,400,000	3,400,000	0.0%
Frozen Mammoth	5,200,000	5,200,000	0.0%

Evidence boundary: the exponent was derived from the two rarest original items. The Duck, five orders of magnitude less rare, then landed within 1% of the prediction without being used to build the fit. Later, an independent 22-card check and the Update 2 extension on the rarest-items page also landed within ±5%. This remains a footage-fitted rule rather than a datamined constant.

August 19–20 verification reads

Every row in this table is a single-recording card read from S7 or S8. All 19 accepted rows fall within ±5% of 45 × odds^0.7; the displayed error is the supplied formula comparison.

Item	Source	Condition	Rarity	Displayed value	Error
Dino Skull	S8	MINT	1 in 5,115,858	2.2M	+1.9%
Emerald	S8	MINT	1 in 7,220,000	2.8M	+1.8%
Old Tank	S8	MINT	1 in 46,924,218	10.5M	+0.5%
Frozen Mammoth	S8	Good	1 in 10,002,902	3.5M	+2.3%
Moai Head	S8	Perfect	1 in 4,812,200	2.1M	+2.2%
Crashed Helicopter	S8	MINT	1 in 21,850,000	6.1M	+1.3%
Piano	S8	Good	1 in 623,556	516.5k	−0.8%
Emerald	S7	OK	1 in 1,056,704	740.4k	+0.1%
Poseidons Trident	S7	Great	1 in 39,600,000	9.3M	+0.8%
UFO	S7	OK	1 in 95,254,190	17.2M	+0.6%
Nuke	S7	OK	1 in 13,076,279	4.3M	+0.3%
T-Rex Skeleton	S7	OK	1 in 57,033,502	12M	+0.8%
Leviathan Skull	S7	Perfect	1 in 660,000,000	67M	+0.3%
Sapphire Skull	S7	Great	1 in 1,781,882,796	134.3M	+0.4%
Angel	S7	OK	1 in 3,190,025,989	202M	+0.2%
Sphinx	S7	Great	1 in 11,000,000,000	480.5M	+0.4%
Submarine	S7	Good	1 in 24,700,000,000	846.4M	+0.1%
Sphinx	S7	MINT	1 in 71,108,866,794	1.7B	+4.5%
Submarine	S7	MINT	1 in 137,233,035,794	2.8B	+0.5%

The names Sphinx, Submarine, Sapphire Skull, Leviathan Skull, T-Rex Skeleton, Moai Head, Crashed Helicopter and Poseidons Trident were seen in current footage. The reviewed footage does not identify which names, if any, correspond to Update 2's changelog line “4 New Items”, so this guide does not assign them to that line.

Polishing checks from S7

S7 supplied two more before-and-after sequences. Each sequence is a single-recording read:

Item	Before	Intermediate	After	Observed change
Sphinx [87,747.5KG]	Perfect · 1 in 32,934,633,031 · 1B	—	MINT · 1 in 71,108,866,794 · 1.7B	Rarity odds ×2.16
Submarine [179,591.1KG]	Good · 1 in 24,700,000,000 · 846.4M	Perfect · 1 in 31,920,691,430 · 1B	MINT · 1 in 137,233,035,794 · 2.8B	Two observed polish steps

The formula remains consistent at every displayed step in these two sequences. The Sphinx and final Submarine cards also appear in the verification table above.

Excluded cards from the same reads

A handful of readable cards in S7 and S8 were excluded. One Longship and one Midnight Diamond card contradicted both the formula and other cards of the same items. The exact odds 1 in 31,920,691,430 and 1 in 137,233,035,794 also appeared on cards of more than one different item and weight in S7. The reviewed footage does not explain that duplication; a per-type condition table or a transcription artifact are possibilities rather than established explanations. We exclude the reads we cannot reconcile.

What the exponent means

Because the exponent is below 1, value has diminishing returns on the rarity-odds number. Doubling that number raises the formula value by about 62%. In practice, throughput upgrades can therefore compete with pure luck: several moderately rare finds may out-earn one jackpot.

Museum evidence is version-dated

The August 8 recording showed museum display cards with a per-second rate:

Display item	Rarity	Income/s	÷ rarity^0.7
Duck [2KG], OK	1 in 22	391/s	45.0
Bear [4.2KG], Great	1 in 80	965/s	45.1
Sunglasses [0.1KG], MINT	1 in 147	1.4K/s	42.7
Bear [11.1KG], Perfect	1 in 500	3.9K/s	50.6
Bear [3.3KG], Good	1 in 244	1.1K/s	23.5

Four of those five dated cards land between 42.7 and 50.6, close to the sell-value coefficient. The Good Bear is the outlier at 23.5; that one card does not establish why it differs.

The August 19 S7 recording showed a different presentation: 16 discrete tourist payment events, from +4.8M¢ at 11:21 through +623.4M¢ at 13:57, with no per-second tick rate shown in that recording. The footage reviewed through August 20 does not establish whether Update 1's plot rework changed the income mechanic or whether per-second cards and lump-sum tourist payments coexist. The museum guide keeps both dated observations together.

Weight in the accepted sample

Within the August 8 museum-card sample, weight predicted income less closely than rarity did: the 0.1KG Sunglasses showed 1.4K/s, above the 4.2KG Bear at 965/s, while also carrying the larger rarity-odds number. This is a sample result, not a universal weight rule.

The dated collection read

The August 8 collection UI showed 55 items in total. That recording caught a player moving from 31/55 to 35/55, consistent with a counter for distinct item types found in that version.

Museum guide — dated income displays, tourist payments and plot expansion
Rarest items — the 22-card and Update 2 formula extensions
Gear upgrades — what to spend money on
Money guide — the earning loop and cash sinks