This isn't the first time she's done Merch for her tours. She's done it for the last couple of tours as I've got a programme for the UK & European tour in 2010 (I just refuse to pay the prices but then, I just usually settle for a programme at a gig...or any 'can only be bought at a gig' music

) and I remember the signed canvases for LIABL at £50 (I think).
Usually if you wait long enough the price comes down when they're trying to clear out after all the tourings done and you can pick things up for buttons

Regards
Vhari x