tarkov.dev's live price service is down, so flea prices are from its data feed as of 12 Nov, 20:00 UTC — they refresh automatically.

238 items. Stackables such as ammo and money are left out.

#	Item	Size	Best value	Per slot
101	Dorm room 306 key	1×1	₽72,314 Flea, after ~₽27,686 fee	₽72,314
102	Health Resort office key with a blue tape	1×1	₽68,711 Flea, after ~₽10,823 fee	₽68,711
103	Dorm room 303 key	1×1	₽68,073 Flea, after ~₽19,635 fee	₽68,073
104	RB-KORL key	1×1	₽68,040 Flea, after ~₽15,038 fee	₽68,040
105	OLI outlet utility room key	1×1	₽67,051 Flea, after ~₽81,084 fee	₽67,051
106	Financial institution office key	1×1	₽63,556 Flea, after ~₽8,125 fee	₽63,556
107	Knossos LLC facility key	1×1	₽62,885 Therapist	₽62,885
108	Labyrinth key	1×1	₽62,885 Therapist	₽62,885
109	Observation room key	1×1	₽62,885 Therapist	₽62,885
110	Torture room key	1×1	₽62,885 Therapist	₽62,885
111	Aspect company office key	1×1	₽62,718 Flea, after ~₽6,163 fee	₽62,718
112	Health Resort west wing room 203 key	1×1	₽61,743 Flea, after ~₽8,638 fee	₽61,743
113	Rogue USEC stash key	1×1	₽61,604 Flea, after ~₽6,036 fee	₽61,604
114	Labrys access keycard	1×1	₽61,573 Therapist	₽61,573
115	TerraGroup corporate apartment key	1×1	₽61,200 Therapist	₽61,200
116	Health Resort universal utility room key	1×1	₽59,361 Flea, after ~₽6,164 fee	₽59,361
117	Health Resort west wing room 325 key	1×1	₽59,331 Flea, after ~₽28,660 fee	₽59,331
118	Dorm room 308 key	1×1	₽59,260 Flea, after ~₽38,668 fee	₽59,260
119	HEP station storage room key	1×1	₽58,890 Flea, after ~₽5,661 fee	₽58,890
120	Company director's room key	1×1	₽56,661 Flea, after ~₽5,494 fee	₽56,661
121	RB-GN key	1×1	₽56,493 Flea, after ~₽19,260 fee	₽56,493
122	Supply department director's office key	1×1	₽54,184 Flea, after ~₽10,210 fee	₽54,184
123	Health Resort east wing room 306 key	1×1	₽54,029 Flea, after ~₽5,721 fee	₽54,029
124	X-ray room key	1×1	₽53,651 Flea, after ~₽6,484 fee	₽53,651
125	Gas station office key	1×1	₽53,312 Flea, after ~₽11,708 fee	₽53,312
126	RB-AO key	1×1	₽53,116 Flea, after ~₽5,831 fee	₽53,116
127	RB-TB key	1×1	₽52,893 Flea, after ~₽6,985 fee	₽52,893
128	RB-PSV2 key	1×1	₽52,888 Flea, after ~₽5,202 fee	₽52,888
129	Health Resort east wing room 216 key	1×1	₽52,651 Flea, after ~₽18,879 fee	₽52,651
130	TerraGroup Labs weapon testing area key	1×1	₽51,714 Flea, after ~₽5,863 fee	₽51,714
131	USEC stash key	1×1	₽51,288 Flea, after ~₽7,440 fee	₽51,288
132	RB-OP key	1×1	₽51,042 Flea, after ~₽18,555 fee	₽51,042
133	Object #11SR keycard	1×1	₽51,000 Therapist	₽51,000
134	Operating room key	1×1	₽49,470 Therapist	₽49,470
135	Concordia apartment 8 room key	1×1	₽49,099 Flea, after ~₽7,068 fee	₽49,099
136	Health Resort west wing office room 104 key	1×1	₽48,450 Therapist	₽48,450
137	Dorm room 114 key	1×1	₽47,812 Flea, after ~₽5,026 fee	₽47,812
138	USEC cottage second safe key	1×1	₽47,411 Flea, after ~₽4,612 fee	₽47,411
139	USEC cottage first safe key	1×1	₽46,731 Flea, after ~₽4,539 fee	₽46,731
140	Health Resort east wing room 209 key	1×1	₽45,687 Flea, after ~₽4,511 fee	₽45,687
141	Health Resort east wing room 316 key	1×1	₽44,746 Flea, after ~₽4,313 fee	₽44,746
142	Gas station storage room key	1×1	₽44,455 Flea, after ~₽5,792 fee	₽44,455
143	Health Resort east wing office room 108 key	1×1	₽44,102 Flea, after ~₽20,460 fee	₽44,102
144	Health Resort east wing office room 107 key	1×1	₽43,655 Flea, after ~₽5,635 fee	₽43,655
145	Cargo container mesh door key	1×1	₽43,181 Flea, after ~₽4,394 fee	₽43,181
146	Dorm room 218 key	1×1	₽43,142 Flea, after ~₽8,007 fee	₽43,142
147	Health Resort west wing room 216 key	1×1	₽43,095 Therapist	₽43,095
148	Rogue USEC workshop key	1×1	₽43,056 Flea, after ~₽4,146 fee	₽43,056
149	TerraGroup Labs manager's office room key	1×1	₽42,975 Flea, after ~₽4,879 fee	₽42,975
150	Car dealership director's office room key	1×1	₽42,967 Flea, after ~₽6,600 fee	₽42,967