First, yes - I discounted deeply. Things I sell in a gallery with rent and their percentage take have to be priced higher. Even POD has to be higher than things I print myself. So I cut those "middleman" costs out and the prices were 50-60% of what my gallery prices have to be. That, I am certain, helped a lot. (I have a Giclee printer that prints up to 13x19 and I use a variety of papers from metallic to matte to semi-gloss, depending on the image). This bazaar charged only $25 for one table and two days! So my total overhead was almost nothing, allowing me to sell cheap.
I sold a wide variety of items - two different frames that held three 5x7 prints each with a matching series in each frame. I sold one window frame with 4 panes into which I placed one image, cut in 4 pieces (and printed to match the size of the window pane glass). This takes an image that works (few do) and a lot of work, but it was worth it.
I sold numerous postcards, all oversized with local images. I sold some greeting cards (but surprisingly no Christmas cards). I moved a lot of 5x7 prints in 8x10 mats (and Clearbags, of course). I also sold quite a few 11x14 prints in 16x20 mats (and Clearbags). I sold a couple 5x7 prints matted and framed and one 8x10 matted and framed. I also moved one 11x14 matted and framed.
Most of the images I sold had local flavor or images. A local cathedral shot sold 4 different sizes of images.
I hope this helps. To those having bazaars and holiday markets, I wish you great success!