No problem. At the moment, no one in their right mind would use up 250 marrows for a glow effect that works like sphere and doesn't even apply to the holder. I believe someone even pointed out in another thread that at the least, 250 marrows would be over 1.2 billion gil. You can get if not all relic weapons with that kind of gil.
Yea, and I don't even think there's a stat boost benefit to the +1 99 - it's just a visual effect (at least that's what I remember reading on the official forums, but don't recall the thread) but maybe that's changed.