Outer ring - who uses and what are your findings

Never tried an outer ring, I use a Mitchell eng record clamp which is supplied with a couple of different thickness felt washers to be used under the record. You can adjust the pressure of the clamp by how much you tighten it.
I have found it works very well for minimalist warped vinyl but if you have a really bad edge warp it does not help much.
Every time I look at cost of outer rings it puts me off...lol

Is there such a thing as an " affordable" outer ring?
I mean less than the cost of a lot of people's carts or whole tt?

As I have not tried one these are just musings.
Surely one of the 3 to 4lb rings is only going to work on a tt with a generous platter weight and powerful motor?

I guess if you are in the market to spend $1000 to $1500 for a ring it should be presumed obvious your tt would be up to snuff to start with.

From the sounds of things I will stick with my Mitchell center clamp and just avoid buying badly warped records!
I have none in my collection that I deem bad enough that the Mitchell does not resolve, maybe I am lucky.

@vair68robert.
I could find no outer ring for sale on the vinyl nirvana site, seemed to be just for thorns and ar tables and repairs?

@vair68robert. 
Thank you for the extra info
@melm 
also appreciate the site info for cheaper options
Cannot see myself changing out my Nottingham Analog table anytime soon and have not seen or heard of anybody running an outer ring on one of them but who knows?