Sigh, I wish they would fix that issue with that recipe. My stoneware vendors are all lopsided, and my anal nature can't stand the gaps I leave for the deeds.
Not sure what something like this would go for. Before they decided to make used deeds blessed, I was going to try and collect all the blessed deeds from heartwood to make a set. I lost interest in the project, partly from how much it sucks to do the ML quests and then the whole blessing thing for regular deeds. Sure they face a different direction, but it's just not as exciting somehow.
I think also that stone anvils can be turned with the dec tool so, so really the value of the deed is just being the deed. I mean, place the anvil and people won't even notice 99% of the time, what with facings being contrary in UO and not really noticeable.
So, for a semi rare deed of this nature humm...I'd say 100k I suppose. Maybe someone will prove me wrong and quote more.