Well obviously if it is the cheapest icon/np ratio for its icon amount, its probably a good weapon for that price. Thats all that matters for 1p 99% of the time.
Although I think im going to have to go edit my rating on it now.
It still sucks in One Player (sucks might be too strong a word, granted).
7-Pound Trout averages 0.35 icons less for tens of thousands less in cost. The
only advantage the Potion has over it (other than Two Player use) is that it doesn't run Physical (which is more commonly blocked). You can stick to the 6-icon range to get mono-weapons for much less that will guarantee their attacks past opponents while the Potion won't necessarily be able to (this doesn't automatically rank the Potion worse, but it does point out that the Potion isn't guaranteed stronger).