honestly spend more if you have too. I spent £170/240eu for a N3DSXL recently. But I had the guarantee it was unopened and new. Came with 9.0EU FW worthwhile buy thanks to cias/hombrew and i finally got NNID to work on it finally lol, already wanting to replace the 32gb sd card in it almost full. (price was a bargain it was the gold majo mask XL XD)
CFW outweighs the cost of the device depending on its uses. your only issue would be getting your system transfer to work. I heard you can doa system transfer to EMUnand aswell as an option. its all about the saves.
Good luck with getting a nice purchase it will be money well spent.