Re: Gallery and facebbook questions
Every - what I will call "professional" gallery I work with has exclusivity wording in the contract all artists must sign when giving them work to sell. Most of them state that the artist cannot sell their work within X miles of that gallery. If you didn't sign anything, I would go with what has already been posted, ask them their thoughts on what you want to do. I am assuming you don't want to do anything that might jeopardize your future with them.
Regardless of what they say about your questions, having a wide range of pricing for similar works isn't a big deal for a beginning artist, but once you have established a following and your work is hanging in highly regarded galleries, you should not be selling similar works for less in some locations and more in others. This confuses the potential buyers and can cause some problems with galleries. It is considered unprofessional by many in the gallery world to openly offer two or more different pricing tiers. If you want to be taken seriously by other galleries in the future, you should price similar paintings at the same price level, regardless of where they are hanging. This usually means pricing all work for the highest priced location.