I say Etsy because comments on journals can get messy. With Etsy once its sold, its sold, no confusion or anything of the sort. Plus if your credit card or paypal is set up on Etsy it makes for faster checkout, which I learned is something you seriously need with your pelts! I clicked the "check out" button and as soon as I did the pelt was already sold. I watched like 3 pelts go in 5 minutes.
I like both about the same but lean toward etsy because of your comment of being able to show more pictures. I would imagine it may be easier with notes and whatnot, less likely for someone to claim something then back out too.