Dont forget your import charges on top of that.
You hear that same saying over and over again when it comes to reliability of a W58, 'It should be fine'. Quite frankly I wouldn't take a word someone else says with a pinch of salt in that respect because I can almost guarantee that any given two boxes wont be the same in terms of how much power they will hold, its just luck of the draw. Its the same with the R154's really, unless they have never seen abuse in there life or they just happen to be in very good shape internally its a gamble but you would have better chances of not nuking a 154 over a 58.