Unless you a collector or looking for an investor forget what the price is. For a new reno, just go for something that is large, vibrant and colourful...just like life!..........and I assume you live a full and colourful life! You want to bring out the life of the room, thought naturally it needs to match flow with the room/house. This is what we did with out place after the reno's.
Other than that you should get what you like...... art is very personable and subjective.
PS: as a kid, we had a Van Gogh (Sunflowers) on the wall of the fibro beach house. When we move to a bigger beach house the Van gogh was the only thing we took with us other than the usual stuff, Bed, kitchen stuff etc. It now sits on the edge of the kitchen wall. Its obviously a painted copy and well over 50 years old, but I always tell people (tongue in cheek) that its an original!!!