[Feature Request] Price Filtering

Being able to add a filter that would limit card to a maximum or a range of prices would be very helpful.

It would make it much easier to build a budget deck, or to sort through my own collection for cards within a certain value range for setting up trades or deciding which cards are worthy of being put into my trade binders, etc.

As an aside, it would also be extremely helpful to use AND/OR/NOT type keywords in a text search, or to be able to add multiple instances of the same field to a search (i.e. two separate rules text fields). This would allow people to further refine their searches very efficiently (i.e. searching for a defender that also includes card drawing effects [two rules text searches]).

Seriously loving the site and spreading it around to everyone I can.