What PV are you using?
I have the smaller 3.5ml tank and I really like it. It's cheap and works well. I use the 3.5ml on an Epower.
The price is about avg for that tank on the link you provided, but I wouldn't get it from there.
The Smoktech tanks are supposed to come with a 1.5ohm dual coil carto in the tank AND a drip tip. That's what's BS about that vendor bc they took the carto and drip tip off, but are still selling it for $10.
You can get that same tank from Crystal Clear Vaping for $10.50. They list it as a 6.5ml tank but it's the same one as your link.
For $10.50 CCV gives you the tank and the carto and drip tip that are supposed to be included. Plus CCV has free shipping so it would only be $10.50 delivered. That's why that tanks such a good price bc you get a carto and drip tip as well for it. Your link took them out, but still charges the same price, which is BS.
Hoosier Ecig supply sells those tanks too for a good price as well as a few other vendors.
CCV and Hoosier also both sell prepunched replacement cartos for those tanks that have the metal base on them like the carto that comes with the tank. You don't have to use a carto with a metal base and can just punch a normal carto yourself. I like the metal base though bc it stops the tank from being able to slide down.
I use the 1.7ohm Ressurector cartos in the tank and they work awesome. I don't know what PV you use, but I don't like dual coils a lower voltages, so I use the Ressurectors Instead and they are alot better than the dual coil that comes with the tank.
Hoosier also sells the Ressurectors as well, which are really just the Smoktech 1.7ohm XL cartos.
I would buy it from CCV or Hoosier if you want to get prepunched cartos for it too bc they both have them.
Also check out VaporBeast too. They sell the bigger tank as well and for a really good price. Right now that tank is their deal of the day and it's only $8.99 which is an awesome price for a tank, prepunched carto, and drip tip. Even when it's not on sale, VaporBeast sells it for $9.69, which is cheaper than mOst other vendors sell it for. I think they have free shipping too, but I could be wrong on that