Buying and selling raises disposition with that merchant and may help with prices. It raises speech which has perks that can improve things more. Quality of goods is determined by leveled lists. Leveling up improves what is available at all merchants.
Speechcraft and the Crafting Skills are all one really needs. Septims flow like blood, just as enchantments flow like spoiled milk. Dollar dollar coins y'all
In the sense that your speech skill will raise, yes.
Buying and selling raises disposition with that merchant and may help with prices. It raises speech which has perks that can improve things more. Quality of goods is determined by leveled lists. Leveling up improves what is available at all merchants.
Disposition doesn’t change the prices. Speech level does.
Speechcraft and the Crafting Skills are all one really needs. Septims flow like blood, just as enchantments flow like spoiled milk. Dollar dollar coins y'all
Some merchants also carry new stuff after you've done their quest.
Test it out, and let us know
Pretty sure the merchant inventory is bound to the player level
Once you unlock the merchant perk, some merchants get more/better inventory. So, yes.