There's a pattern for some skills where everyone can buy it at one cost, except fighters get it cheaper and scholars get it more expensive.
This includes: Florentine, Polearm, Shield, Style Master, Two Handed Blunt, Two Handed Sword, Two Handed Master, Weapon Master, Weapon Proficiency, Hardy
With that said, only Hardy and Weapon Proficiency are martial skills. There might be an argument that WeaponProf should be costed more like "Shatter/Disarm Blow" (possibly with scholar costing 8 instead of 7)
With that said, there are some weirdnesses in skill costing. Some of these are probably caused by trying to make skills cost the same as they did in 1.3, but at the same time some skills went to having a smoother costing in 2.0 (admittedly sometimes in inconsistent ways). For example:
Slay & improved slay cost artisan's twice what they cost scholars. Slay costs scholar 4, but costs artisan 8. In 1.3, a slay cost scholar & artisan 8. In 2.0 slay+improved slay costs scholar 8 but artisan 16.
Improved slay, Parry - each costs scout 1 less than spellsword, which given that both are fighter-hybrids, and their other "half" have the skills at the same cost. (ex: rogue & scholar both have parry cost 8). The roughly analog "rogue" skills don't have this sort of difference in costing for scout & adept.
A bunch of the martial dual-skills have some weirdness with costing around adept/artisan/scholar.
* "Weakness / Shun Blow" & "Destruction / Stun Blow" - both have artisan having the scholar cost, and adept having the rogue cost, and there being a jump of 2 in cost; rather than more smooth costing that "Sleep/Enfeeble Blow" or "Shatter/Disarm Blow" have. Basically Adept is cheaper than would be expected; or possibly artisan&scholar are more expensive. Comparing 1.3 vs 2.0, its clear some skills got some cost smoothing (shatter used to cost 3,4,8; now costs 3,4,5,6,7 - more expensive for hybrids but cheaper for others). Basically, Adept should probably have these 2 skills costing 7.
* Sleep/Enfeeble Blow is probably 1 to cheap for artisan/scholar.
* Its likely that all 3 of these skills should have the same cost structure: Sleep/Enfeeble Blow, Weakness / Shun Blow, Destruction / Stun Blow. Specifically Fr 4, St 5, Sd 5, Rg 6, At7, Sr 8, An 8 (or in rulebook ordering 4,5,6,7,8,5,8). This is the same pattern "Shatter/Disarm Blow" follows at 1 less cost.
Hardy - artisan is cheaper than adept or scholar.
Assassinate costs 2 for adept but 1 for scout. It should probably cost the same for both.
Herbal Lore & Alchemy costs spellswords the same as fighters -- not the cost expected of a hybrid of fighter&scholar. IE, it costs 6, instead of 5.
Its likely that create trap, herb lore, and alchemy should all cost the same for scout. Fighters can buy all 3 for the 6 and rogues can buy all 3 for 3, so its not clear why the cost varies. Its possible what this is actually suggesting is that Create Trap should cost rogues 2.
With that said, none of these are really a big deal since they pretty only effect "offspec" skills. They mostly affect skills that almost no one will buy.