I've made a few pounds, now and again, by buying and selling books. As I'm sure you're aware, a book (like anything else) is only worth as much as anyone is prepared to pay for it. I certainly wouldn't hold out any great hopes of making much money from the title you refer to. It was published in 1887 by the Sunday School Union, which suggests that it was aimed at younger readers. The pseudonym 'Meta' was possibly chosen because of its dictionary definition of a 'change of position or condition' as a reference to the evangelical aims of the work.
Anyone researching books should have these two sites bookmarked:
1. For an indication of prices (although not relevant to the title referred to here), Abebooks:
http://www.abebooks.co.uk
2. For details of publication dates, etc, The British Library catalogue:
http://catalogue.bl.uk/F/?func=file&file_name= login-bl-list
Chris