Incantations and "cheaper" magic.

The incantantions were an optional rule published in the 3.5 sourcebook "Unearthed Arcane" and you can find in the 3.5 SRD. They work like rituals causing a spell-like effect.

This made me to think about how would be the ordinary life in little towns where standar magic could be necessary but too expensive for ordinary citizens, for example to heal injured victims of accidents or usual diseases. How would be a cheaper option with any handicaps? For example healing spells that needed to be casted in special zones near temples (or certain wondrous architecture) and using help of blessed bandages and ointments for wounds. Maybe a witch could craft some potion or any other single-use magic item using incantantion rituals instead spending spell slots. 

What if a rich merchant could pay for a reincarnation spell to become an elf? Even if ten or more years were necessary it would be worth. Can you imagine the potential impact in the society? A simple goblin working in a temple (as a hierodulos or "sacred slave") or in a castle could a a former human who had a lot of debts to be paid. 

Could "wondrous architecture" (like magic item but they can't move, from 3e "Stronghold builder's guidebook") be used as a help for incatations?