he told me that whenever anyone is signing up for cricKet service, and they are providing their own phone, whether they are activating a new line or not, they would be charged $15 for activating the phone on the line.
he also told me that the buyer could have some trouble getting their phone on their line, unless they signed up for the $50 per month plan, cuz only that plan will allow the phone to accept service from towers outside the phone's original...
HOWEVER, IF you buy a brand new Cricket phone (i.e. packaged in a Cricket branded box, such as those you can purchase new from a Cricket store or Wal-Mart), AND you activate the phone by calling Cricket, you can request that the activation fee be waived due to the fact that you have purchased a "brand new Cricket phone" as opposed to a used phone like you might find on EBAY.
I believe that the operators at Cricket are able to waive that fee, but they won't necessarily volunteer to do it, so you should make a point to ask.
As for a buyer having trouble getting a phone on their line unless they signed ...