Flash an iphone 5s over to cricket?

I have a bran new iPhone 5s and a new cricket plan but the iPhone is from Verizon and I was wondering if they could switch it from my current phone to the iPhone? And of they can then how much does it cost to do it? I know I can just take my sim card and cut it up to a micro sim card size to make it work an those are about $10 a piece. I don't know if that would affect the speed or not though if I did it or let them do it. Any helpful answers are welcome.

Yes they can switch / upgrade. It shouldn't affect speed, they have a verizon plan of their own. You can switch iphone 5s to over 5c