Hello Jonas,
expensive is ever relative ...
119 USD ... is about the same relation as DrDepth, but much moderately priced as Surfer, GM (and GM can not even interpolating SLG/SL2), Sonar5, Hypack, Insight Genesis ...
I can't believe, that Matt will be a rich man with his program.
But You have a 1st class support, updates and new features, which most other programs no owning.
Matt - on the other side: This is a note, that a few user search a solution for 1 ... 5 lakes and have no interest to work in for a complexly program. Wouldn't it be better for this people, to sent there files, and RM create the chart for separate Price? Tell the truth, if i had only 1 ... 3 lakes, i would not spend more than 20 ... 30 USD for depth charts together, at any rate not so much as Insight Genesis.
Best wishes
fjordfisher