@John C
I would go for the Segelei Mini 30 watt personally, you can find them many places for 35-40 bucks. Yes I know that is about ten dollars more than you're looking to spend but waiting for fast tech to ship an old 30 watt Cana clone or if you can find one somewhere else still isn't really any cheaper. I looked up the old Segelei 30 tube mod and it's getting hard to find with all the box mods on the market right now and they want twice as much for it as the Mini at the stores I did find it in stock.
30 watt mods are way more affordable now than they were a year ago, but sometimes you have to pay for the features you want...the Kbox is what it is and what it costs because of how basic it is. You might as well pay a few extra bucks than find something cheaper, who knows where and how long it will take to get to you, and then hate it and spend even more money on something else... Just my two cents worth bud.
happy hunting and best of luck.
ps...the links above are for 18650 battery sleeves so you can use your 18650's in a mod like the 7/22 that normally takes the bigger 26650's...those are getting fairly cheap along with the 7/30's but buying the mod and the sleeve and you've pretty much paid for a Segelei mini just the same.