Why Did The Send Amount Change To 500 WLS

I am curious as to why the send amount changed to 500 WLS? Is that a good amount to get a somewhat good trade? I have been conducting several experiments and I have concluded that I probably will need credits in the thousands anyway. It's a good thing I saw it before I tried to do a trade. I think for stuff like that Whaleshares should have social medias like Facebook since not everyone may have discord.