"Not sure I understand what you're saying here. Could you clarify, please?"
I was thinking that the Gabel Super Lite carbon trekking poles might still be available cheap from Costco, but apparently not. The do have Yukon Charlies that are part carbon for $50, but no idea what they weigh. There are also the Fizan carbon poles that could be shopped for a low price.
The point being that if a finished carbon pole were available for around $50-75 a pair, it might make more sense to buy them instead of MYOG, when the cost of the raw carbon tube on the websites noted by David G. is so expensive.
Even though it appears more difficult to find a bargain than it was a year or so ago, I would still be a little leery about buying the raw carbon tube. Looking at the websites posted by David G, the 1/2" to 3/4" diameter raw carbon tube that is "wrapped," "braided," or "rolled," as opposed to pultruded, is quite expensive, and none of it appears from the sellers' descriptions to be all filament wound (like some smaller diameter arrow shafts are - look at Roger Caffin's posts about carbon filament winding machines). You'll not know for sure how strong it is until it breaks. If you buy the finished trekking (or tent) pole for less money, and it breaks, you might be able to obtain a refund or replacement. I'd want to know a lot more about the more expensive raw tube before buying it, like maybe an analysis and recommendation from an expert. I can buy arrow shafts, cut off short lengths and break test them; but in terms of both safety and expense, I'm not up to break testing a tube around the diameter of a trekking pole. From the most recent posts, I think the OP may have some of these concerns, also.
If I were determined to make my own carbon trekking or shelter pole, I might want to wait until the end of ski season, and look at sales for carbon ski poles, especially the longer X-C ski touring poles, to try to find something light and with enough untapered length to cut up to make sections that could be ferruled together to make a pole that breaks down and folds up like the new Black Diamond ones do.
Given the obvious need for strength in a ski touring pole, I would be hoping that the ski poles would be a variety of carbon that is not pultruded. The sale price would have to be low enough to justify a gamble on this. The list prices are all over the walk and run from under $30 for a pair of poles up into the several hundreds. I have no idea what one might be able to find in carbon in ski country in the spring, but have found ver light high tempered aluminum alloy tube very cheap this way to use for making camp chairs.
I've also noted that some of the ski poles being sold now either telescope or break down as trekking poles do, and can be readily converted to hiking poles by changing to a smaller basket. I've seen mostly aluminum alloy ones, but there are carbon ones out there also.
Hope that is a little clearer.