You will do just fine not sure about how much you are asking for the images. But I would definitely say is profitable I recently sold my 1st image and if you wanted to break it down into the cost.
Here's a recap
Taking the image $0 dollars
printed the image myself at my job using a fiery rip workstation connected to a rastek large format printer=0
mailing& shipment in a circular tube with insurance $22
total money earned back $150
The image was sold to someone who works or co owns a place in South of the Border Dillon SC
image size 24x36
But let's talk beyond that I will give you the example of Trey Ratcliff he has never taken a photography class he actually began taking
images 5 yrs ago and because of his passion for it he is now reference as the HDR king by some. So in a profit state it has brought him
sponsors,travel,lodging, gear etc.. But most important is not just hdr you can take a really good standard image let's say birding if you can manage to sell it
then it's profitable even if it's a little money.
The future is High Dynamic Range and 3D images
Good subject discussion and that image example you posted here looks good within itself. Goodluck & keep us posted on the sale.