One other thing, Tokuno maps of any level may be valued less if not on the same island as Zento (Makoto-Jima).
Trust me, You really don't want to try a map in the Bake Kitsune woods on Homare-Jima, or any of the areas north of the volcano on Isamu-Jima, without at least a second player as backup. I had two maps near the northern mouth of the pass on the east side of the island (where the statue on a pedestal is), and the active number (with near instant respawn) of Tsuki wolves there (4-6 on screen at a time) was dangerous even for 2 tamers, once you added in level 4 map spawn to the mix.
While the spawn is pretty much the same levels 1-4 for Tokuno, at level 5 local creatures replace the standard tram/fel ones, and they are far worse (and, apparently, devourer of souls is considered "local"). And, most of the maps seem to be much more likely to be in a heavy, nasty spawn site (Rune beetle or Yamandon spawns, masses of Tsukis, or in the tangled terrain of the Kitsune Woods) than any clearer, medium/light spawn area (last 32 maps I got through random hunting, about 8 in Tsuki areas, 6 in the rune/mage area NW of Serado, 6 in the Kitsuni Woods, 1 where yamandon point meets the Tsukis (so I got the yamandon, rune beetle AND lots of Tsukis plus the chest spawn), 1 at the Homare rune beetle, 3 in the Rai-jin area at the north end of Homare, 1 in the undead (rotters, bone mages, revenant lions) are north of the Citadel. That's 26 in "you got to be kidding me!" places.
The remaining 6 being 1 in the wastelands, 1 at the edge of the Zento housing area, 1 in the kappa area south of the Isamu gate, with all the ship wreckage, 1 in the ruins in the kappa area by the spiders, and the last 2 on the road between Homare gate and the Kitsunes.
That's a ratio of bad areas to good of about 4/1, that's actually an improvement. Before this last batch of t-maps (where I collected 150 maps, and started doing them lowest first), I'd NEVER had a Tokuno map that wasn't in Tsukis, Rune beetles/mage or INSIDE the Serado area, since the maps made their first appearance (and probably had done 50 or more Tokuno maps over the years, mostly level 6s). That map south of Isamu gate was the first map I ever got on Isamu that was south of the latitude of the Citadel & Spiders (if you drew a line across the map). And, I've not had a Homare map south of the Homare Gate & shrine either.