QUOTE(Sapo84 @ Mar 3 2019, 03:15)

If with "fairly visible" you mean "they barely never appear in battle and never win" I think everyone will probably agree
It was probably created 2+ years ago and is at level 807 from between 6 months and a year, it's easy to see the sad amount of wins.
I'm pretty sure "appear in battle" and "getting win" is different things while high PL monster has "rougher environment".
QUOTE(Sapo84 @ Mar 3 2019, 03:15)

increasing the PL nets more wins
I'm not sure if it really works, my older 500 monsters have around the same wins as a bit never 25 ones.
QUOTE(Sapo84 @ Mar 3 2019, 03:15)

around 1300PL it's already stupidly expensive for basically getting an occasional win here and there.
Apart from getting high-grade materials from the guaranteed gift there is no real advantage in investing in monsters.
Yes, "they're not the best investment which is also true, but it's rather interesting discussion assuming that all 200 PL500 monsters cost around DD5, while 750+ around DD7", ~5m for 1300PL monster is how many years on average? Not sure if it's even 5, but can imagine that it's better than some last drop training.