HoH:MC says that the standard price for enchantments is £15 per pawn of vis that the enchantment costs. Not sure if that's 2x or 3x the amount of vis it takes to enchant, but it looks like the Vis cost is actually 3:1. (It's on p. 114).
So, that would be £45 per pawn that it takes to enchant an item. So, say an oven that gets up to baking temperatures would be CrIg base 10 (melting point of lead is 621.5° F, or 327.5° C, while boiling water is a lot less, and baking temperature is roughly half-way between). R: Personal, D: Sun(+2), T: Individual gets that up to 20. Usable once a day, gives a final Effect Level of 20, which costs two pawns of vis, and thus £90. A quick google search says that ovens were expensive in the middle ages, but nothing showing a price, and then there's the fuel. So I'd say that it would be high-end but manageable, sort of like a Jaguar or Lexus.
Does that help? Basically, yes, he does have some who would be able to pay the price for Lesser Enchanted Items.