I may be more of your target audience than other posters here. I have a bad habit of buying software that a barely use. I seem to be collecting game-supporting software as much as I am minis, terrain, and PDFs. I don't know if your product will be of interest as I'm not clear what exact niche it is trying to fill.
I'm not looking to publish anything. I want a convenient way to support my homebrew campaign world with maps to reveal in RealmWorks during a game and the occasional battlemap. I don't have one approach, I mix it up. But I'm increasingly looking for lazy ways to prep, which means buying maps others made and using easy to set up terrain, or a wet-erase battlemap (though I'm currently without becase--AGAIN--I used a sharpie on in and am punishing my repeated stupidity by not allowing myself to buy a new one until I've learned my lesson).
I own Campaign Cartographer and a number of the addons. The learning curve and time necessary to get something useable out of it made it feel like work and so I barely use it. But now and again it is the best tool for what I want to accomplish, such as turning a real map into a to-scale grided map.
For purchased digital battlemaps, I prep them for printing with GIMP and PosteRazor using the process that DM David describes here:
http://dmdavid.com/tag/how-to-print-map-graphics-as-battle-maps-using-free-software/
My main go-to tool to put something together quickly is Inkwell Ideas's Dungeonographer, Cityographer, and Worldographer. My problem with these tools is that while they make it easy to create a battlement, region map, or town, everything kinda looks the same after a while. Also, adding icon packs is a pain, I stopped supporting their Patreon because I found I didn't want to bather with the icon loading and management process. I am, however, backing their kickstarter for their new version of Worldographer.
I'm also backing Dungeon Maker: An Isometric Map Maker for Role Players since it looks fun and will give me another kind of map that I can use in RealmWorks or to make handouts. It is not useful for making battlemaps.
With all this software, what do I still wish I had?
1. An easy way to take a high quality battlemap image and prep it for printing without having to go through all the steps with GIMP and PosteRazor. I want it to help me prep to print in sections on 8.5x11 and also an option to print a plotter printer.
2. Something as easy as Dungeonographer or easier with a much wider collection of doors, furniture, etc. and/or an easy way to add items from graphic files.
Seems like your tool may help with both. If your software give me a way to quickly make battlemaps without a high learning curve and which allow me to make maps with a different look and feel, I would probably buy it for 20 on an impulse buy. Over 20 and I have to start really comparing features to what I already have to see if I would really get much use out of it.