This item can be either be bought from the Vendor in the Marketplace or crafted at the Alchemist with crafting materials.
So it might be interesting to note that to Craft an Anti-blinding Potion, you need just 405 Gold worth of items (plus 5 Gaia’s Tear, which don’t have a direct Gold price).
If we look at how much Gaia’s Tears cost compared to Gold:
We see that Gold is worth (at the time of writing) almost twice as much as Gaia’s Tears. Prices for tokens in $USD will always fluctuate based on what’s happening on the market, with the prices going up when ingame demand increases and going back down when demand decreases. Free economy, etc. But, for the sake of argument, let’s assume it won’t deviate too far outside of [Gold/4]<Gaia’s Tear>[Gold*4], which would give it a fluid value of 0.25-4 Gold. At most this would put the value of 5 Gaia’s Tears at 20 Gold.
So at most, crafting an Anti-blinding Potion will only cost 425 Gold worth of resources, compared to the 3,000 Gold upfront cost of the Vendor.
In conclusion – Craft it if you can.
It might also be worth checking out items at the Trader at the Marketplace to see how much liquidity there is in a certain item. Click here for more about the Trader.
At the time of writing, it actually worked out cheaper to buy Anti-blinding Potions from the Trader than from the Vendor, but more expensive than crafting the item yourself:
Click to learn more about Item Liquidity Pools
Also note, once PVE and PVP options are available, these items will significantly increase in demand and the price will go up in the Trader accordingly.