Boom! Studios· 2018–2022 series · Cover date Mar 2021
Fair market value
Grade
CGC slab
Raw
9.8 NM/M
$480
$408–$552
$210
$179–$242
9.6 NM+
$374
$318–$431
$168
$143–$193
9.4 NM
$292
$248–$336
$134
$114–$155
9.2 NM-
$228
$194–$262
$108
$91.39–$124
9.0 VF/NM
$178
$151–$204
$86.02
$73.12–$98.92
8.5 VF+
$139
$118–$159
$68.81
$58.49–$79.13
8.0 VF
$108
$91.89–$124
$55.05
$46.79–$63.31
7.0 FN/VF
$84.31
$71.66–$96.96
$44.04
$37.43–$50.65
6.0 FN
$65.77
$55.90–$75.64
$35.23
$29.95–$40.51
5.0 VG/FN
$51.30
$43.61–$58.99
$28.19
$23.96–$32.42
4.0 VG
$40.01
$34.01–$46.01
$22.55
$19.17–$25.93
2.0 GD
$31.21
$26.53–$35.89
$18.04
$15.33–$20.75
Raw, ungraded
—
$65.00
$55.25–$74.75
Value history
Show history as a table
grailworth's fair market value: what a copy at each grade is worth today, from this issue's market
and how value moves with grade across every comic we track. Bold: our firmest values. *Rough: a looser estimate.
+$: worth grading, a raw copy at that grade gains this much slabbed by CGC, after the fee and shipping.
Pick a grade for its value history and the most to pay for a raw copy you'd send to CGC.
What's it worth?
See fair market value at every grade, raw and CGC, with value history and the grading break-even.
Firefly #27 (2018) is issue #27 of Boom! Studios's Firefly (2018–2022), with a cover date of March 2021. grailworth values it from 10 recorded sales, most recently on Jun 25, 2026, and from how comics like it move in value from grade to grade.
