I hope they re think the trading post taxes and listing fee's to be less harsh. It sucks for seller's big time....im not talking about market manipulators or trading post campers, just normal players get screwed everytime they put something up for sale that can always have a high chance of being undercut for 1 copper...forcing them to wait weeks for something to sell or re list and pay up fee's again....
As a buyer the market is awesome, with no fee's to put up buy orders, since 1 copper undercutting and low demand has pushed almost everything not end game to be worthless....it mainly sucks for sellers and buyers who are after the higher end materials and items. You lose a ton of gold with the way the trading post is currently. Again im not talking about "playing the trading post".
Honestly, I think that high-end stuff is probably the best option to tax. In a lot of these cases we are talking about vanity and if we need to tax folks, then I'd rather tax the WANTS rather then the NEEDS. Id' rather have folks paying 1g more for dyes, and then deciding if they really want dyes or not, than have folks saying that they simply will not repair their armour, re-spec their builds or choose to not play because they hate playing for waypoint fees.
But, I wouldn't have a problem with changing the tax so that you end up paying less upfront and paying much more once you actually sell the item.