Well it's not really a fail, I'd rather call it "experience" ;-)
I hope it didn't cost you too much. V1 ain't that bad, it's just the full Gerwalk mod that (strongly) sucks (or I missed something with my VE-1 et VT-1).
Actually with time you'll easily recognize V1 and V2 by their general aspect and especially their legs (articulation / rotation on knee for v2, weird rotation 3/4 leg v1), look at their original hands too, V2 are articulated V1s' not.
Still, those V1 are perfect for cutomizing, look great as jets, nice as mid Gerwalk (arms in) and good as battroid (though a v2 is superior, they're still worth the buy if in good condition and quite affordable ).
If you just see the box, V2 have a flap top that recovers the box.
Last but not least, keep an eye on hlj, they frequently have 1/60 Yamato for sale last year I bought a V2 VF-1A (cannon fodder) and armor parts for less than 100€ (94 actually). You'll get a brand new V2 for cheap price ;-)