My firm uses T. Rowe Price which is all no load funds. You can also have a brokerage with them for $24.95 commissions. The annual fees for the company are ZERO. The company is only responsible for making either the matching contribution or the non-elective contribution annually. The employee will be charged $10/fund annually until the total reaches >>>> darn, it fell out of my head! Anyway, the employee has the $10 fee per fund which can come from within the fund or by sending a check at the appointed time.

A word of caution:
Make sure you are playing by the rules in that ALL employees are considered for eligibility. In other words, if you are trying to save on the employer's contribution then make the minimum standards the highest of $5k in compensation for the previous 2 calendar years, and at least $5k in compensation anticipated for the plan year.

Good luck and let me know if you need additional information.

Jenn