I'm not ashamed of the few nylon holsters I have and have and have found that they can do good service for certain applications.
Barsony was the last brand I bought and I found the company to be nice folks to deal with and the holster was inexpensive but nicely made. This was a IWB "pouch-like" thing with a steel clip an was $20. I actually like it.
Uncle-Mike's comes to mind as well. The only holster I have for my only SA, a Flat Top 44 Special,... OK and it's brother, a converted OM 357x44 SPL.
Azula is one I've been eyeballing for leather at a lower price, but haven't owned one.
I have one nylon holster with a suede lining by G&G, which I am certain didn't cost a lot, but I love it for my 4" Bulldog. Unfortunately, they don't make those any more.
Assuming you are looking for something which doesn't cost as much or more than the gun is "worth." Otherwise - sky's the limit. Me? I have "cheap" guns which are worth much more to me than most of the more costly ones I've had over the years.