Entouch long distance per-minute overage charges

Inexplicably, long distance overage charges are not listed anywhere on the Entouch web site.  I have the 250 LD minutes per month feature ($4/month) and used some extra minutes last month.  Once you hit the limit, expect to pay $0.18 per minute (taxes and surcharges not included).  Yikes!  My prepaid cell (T-Mobile) phone rate is only $0.10 per minute.