Net worth has little to do with future earnings, so don't be superstitious about funds with low net worth. Funds, like stocks, investors should be concerned about the rate of return, that is, how much income they can bring to you in the future, rather than how much money the fund has now.
If you buy a fund, I suggest you go to Morningstar. The above Morningstar rating is objective and can be used as a reference when purchasing.