Sorry Krx, i only provide test release for my own customers shops.
My tool Vm Be Pro is used in more then 200 shops(perhaps 300 now), so i think, it should not give you some problem.
In all case if someone report me a problem, i fix it the same day(if i'm not on vacation), but i only had to fix the code 2 or 3 times, in more then 1 year and i add new feature all months(last week for eg. added quick image description editing)
If you really have technical issue, you can write me by email and i refund it, if we cannot solve your problem.
Of course, any tool have some limit, but i think, you don't loose your money, because in some minutes, you can do some work needing many hours in Virtuemart and some feature cannot be done with virtuemart, only with mySQL directly.
P.S: i know excel like and CSVI, it's why i have done this tool. Because all 2 are good product but to complex to use for most users.