The number of sales per day on these is very deceptive. Truth is, these sell out extremely quick (either via bot or someone standing there and buying them nonstop) and the site doesn't update frequently enough to see all of the sales in any given day. Even if there's 80+ of them up for auction, you can just post them without undercutting the slightest and they will almost always still sell within an hour or so.
Too many times do I put these on AH and then run to my Mog House and see that they already sold ^^. Under cutting these by any means is simply a loss of gil. yeah, but it's your spider web, i'm not trying to tell you how to sell it. ^^d happy farming.
With the amount of these being sold a day, it would be alot more profitable to you the farmer, to raise the prices!! Clothcrafters will buy your webs to skill up cloth. So dont be scared to raise the price!! They sell very fast cos your selling for very cheap!
if they're over 2k don't buy them.. keep the price down. crafters can help the market by doing this. i know its insignifigant but it encourages people to stop price jacking when their items don't sell.
Price of this jumps around 2000-3000 gil in Cerberus. People will think 2k to 3k is not that much different, but if you consider % wise is actually very large. If spider webs are stackable, I bet the price is more stable. Why some people undercuts aggressively is just to make sure the AH slots are open.